Nokia was still making well-designed phones with full keyboards up until fairly recently, with the last holdouts in their Asha line. The X2 was very low-end but a good design (rugged as heck but tragically low onboard memory, slow processor, low-resolution camera, & no WIFI/3G), despite lackluster stats. Usability, ruggedness, & things other than "can it play [latest ad-revenue/money-harvesting game]?" or "does it [make money for] google?" is what's key.
As nice as keyboard slider phones can be, I personally think the best design is the Blackberry-style full-QWERTY bar phone with a d-pad (& a screen which can have the touch-functionality switched on & off (capacitive touchscreens can be *too* sensitive)). NEC *tried* to make an Android phone meeting some of these specs, but I understand it fell far short of expectations. I had high hopes.
The new Blackberries, & the NEC Terrain, both have full QWERTY, but lacked any other meaningful inputs than the touchscreen, like the ever-useful d-pad, which is also lacking in the HTC ChaCha/Status. Nokia made the last good phone design with their E6 (or N950/E7), but that was underpowered & had numerous flaws. So I've (personally) settled on what I consider to be the least worst phone around still, a Nokia E73. I still see people with them out & about in the world, & it works quite well for me, as my primary mobile. I can do most anything on it that I need to: I can use various social media/internet functionalities (whatsapp (which is amazing how a major company designs their software to be accessible on most device platforms, not just iDevices & Android!), facebook, synctxt, okc, goodsearch - an enlightened alternative to google, twitter, etc.) & have access to an excellent email client, Citrix support, FM radio built-in (lucky me, I live near Good radio stations), & an amazing GPS. The camera's decent, too. Sure, it's carrier-locked (T-Mobile) but it has better stats than the E72, has built-in WIFI calling & has better data/radio frequencies. It has an older processor & low ram, but I have a 64gb microSD card & if I offload messages semi-regularly it's great for intense everyday use. I have destroyed many mobiles with what I consider "normal" everyday use, so real durability is important, & lacking as a design consideration in most mobiles.
I also have an N900, & bought a spare for when I can buy the Neo900 upgrade. I think that is still too slow (1ghz processor, 1gb ram (but a good sight better than the old specs (which still work decently well)), & the 3-row QWERTY is a setback, but I can do a lot with it, & it's an amazing device in essentially every other regard (admittedly, it's not my primary mobile). The N900/Maemo was/is too touch-driven, interface-wise, &, at least in theory, a Moto Droid or some other 4+ row QWERTY slider phone (Android seems to be the only option, as I don't think anyone's making non-Bluetooth (seriously, why waste even more battery with that when you can make a battery hutch/slide-out keyboard that plugs into the microUSB port (or Lightning port on iDevices)?) QWERTY keyboards for touchscreen-only mobiles other than Jolla with the "other half" attachment (a QWERTY keyboard "other half" should be a standard/free included addon, not something you have to 3D-print yourself (which is serious hobbyist territory at this point)) but most devices are behind the curve, specs-wise, from the touchscreen-only phones (HTC G1, etc.) MOTO Droids, Samsung (Intercept, Captivate Glide, Galaxy 551, Galaxy Ace), etc. http://ibnlive.in.com/photogal... http://www.androidauthority.co... )) would suit my needs fine, but even with CyanoGenMod I'm still averse to Android devices. I'll probably end up buying a 1.2ghz+ Android QWERTY slider at some point, but I think it's a travesty that there's a virtual wasteland of modern-spec phones in various design formats. Some people just plain hate touchscreen-only phones. No virtual keyboard/SWYPE/etc. is going to make up for that. Also, *very* easily shattered/broken screens, & plastic-toy design do *not* qualify as a "winning strategy".
I think most smartphone reviewers on major sites are idiots, but I'll afford them the benefit of the doubt; they're just Educated Stupid. The same goes for whoever is making design decisions for most phone companies. Until new phones in better formats are produced, I will gladly stick to my E73 & my N900/Neo900 (friends & strangers think it's pretty cool when they see me using it (the kickstand, stylus, & multi-OS features win points) or try it themselves); I refuse to acquiesce, & I'm sure there are a lot of us out there, but we need to be more vocal, or start a company that *will* make such phones. If Nokia made the N950 (developer-only keyboard version (E7 style) of the MeeGo (I sometimes read that as "me ego") N9 (why no microSD???)) available cheaply, or with modern specs...