I tell you what, I quit smoking with vaping back in 2011 on gear that's now laughably obsolete. If I could send an inexpensive, modern rig back in time to myself to make the switch even easier, I'd send a 20-watt eLeaf iStick with a Nautilus Mini tank, and 24mg juice (to start) of a good, non-tobacco flavor.
The iStick is versatile, small, simple, and inexpensive. The Nautilus tank performs great, is simple to use and maintain, and looks pretty good sitting on top of an iStick. You may think the taste of tobacco is essential to converting but it really really isn't. There are no convincing tobacco vapes, they all fall into the close-but-no-cigar (pun intended) category. You won't miss the taste once you're getting all your other smoking fixes satisfied with banana pudding or mountain dew or whatever you end up with, and when your nose and tastebuds really come back to life in a week or two, you'll be amazed at how disgusting burning tobacco actually tastes and smells. You'll also find, unfortunately, that the rest of the world pretty much stinks as well, but it's still a great tradeoff.
This setup will cost you less than 70 bucks in total online, and less than a hundred if you buy at a local vape shop. It's not pen shaped, but it's efficiently sized for the amount of battery life you can pull out of it. Fits well in the hand and the pocket, and can be used while it's recharging which isn't the case with most pens.
Once you have a good rig with enough power and juice with enough balls, you'll find the vape is actually preferable to the smoke in every way imaginable, and switching becomes a matter of just not wanting to take a backwards step towards burning plants in front of your face again. Easy peasy.