I've been using Thinkpads since 1997. I currently have a T420s. The machine cost 2K USD with Windows tax for Win7 Professional and Office Professional. It is 1 1/2 years old. Here is my list of problems:
1. The side USB 2.0 port came off the mother board. I'm super careful, but ports get tugged on from time to time. Last week I opened up the machine, and the connection had been tacked to the mother board with two tiny bits of solder. I used a solder gun and 10 minutes to fix it myself. Ports need strong connections to something solid!
2. Same with the power cable. The connection is bad. I have to pull the power cable wire to the left to get it to keep the power on.
3. The computer doesn't always go to sleep when the lid is closed. If I don't notice, I close the machine, put it in my bag, the machine overheats and then it blue screens.
4. There is 1 USB 3.0 port on the back. I know USB 3.0 was new when the machine came out 1.5 years ago, but it has never worked. USB 2.0 peripherals that work in the other ports don't work in the USB 3.0 port.
5. The machine occasionally freezes/locks up for 5-10 seconds at a time (random timing, but it happens about once ever 30 seconds). Removing the battery, disconnecting the power and letting the machine site for 10-15 minutes seems to fix this problem. I've run the Lenovo diagnostics program. I've watched the diagnostics program freeze and sputter. Then it tells me everything is 100% good to go. I have no idea where the problem is coming from. Mother board, Video, CPU, RAM (I've switch out the RAM, it didn't help). Once the problem goes away, I have about 1 week before it comes back. This started in the last week of the 1 year warranty.
6. "Access Connections" is a train wreck. When it works, it is ok. If you want to delete a location, you highlight it, hit "delete" and it deletes the record above. At this very minute, "Access Connections" shows no connection. I'm running on Win7's network connection. Tomorrow it might be working normally again. What if you are in a new location and mistype the password? If the log in fails, it should ask you if you want to re-enter the password. Instead you have to go modify the record.
7. Battery life is crazy. I run on batteries about 6 times a year. The rest of the time I'm plugged in. Last time I was in an airport, I had 45 minutes until the machine shut down. That is with a dimmed screen. I would rather have 1 light battery for daily use (so I can get from my desk to a conference room) and a heavy battery for travel. When I know I want 6 hours of work time during a flight. Instead I have something in the middle that does both functions poorly.
8. After about a year, the fan got loud. I think the bearings are shot.
9. Track pad went out two months ago. I could care less. I use the little red dot 100% of the time.
10. (design gripe) The screen is 900 pixels from top to bottom. Once you add Window's bars, application boarders, menus, I'm working in this tinsy tiny window. My cell phone has 900 pixels up and down! Left and right I have huge fields of unused white space. Most documents and websites are much taller than they are wide. Therefore Lenovo gives you a screen that is much wider than it is tall. I've been wondering if I can write business plans(or Java) the same way they wrote ancient Chinese - up to down instead of left to right. It would fit the screen much better. Lenovo thinks their business laptops are used for nothing other than watching movies. I think this shows how well they understand their customers these days.
I am their ideal client. I will happily pay a 2-400 USD premium for a "business laptop". I want to run databases, huge Excel spread sheets, occasionally write a little code. If I could pay a little extra for a more reliable machine, it is worth it to me. The cost of unplanned downtime is higher.