Yeah the 15" MBP is still relatively light weight and very slim, if its your primary machine I would definitely get that over the 13". I love my 13, but I use it as a secondary system for travel etc.
I tried the 24, 22 and the 13. I was going in and set my sights on the 13 because it was cheaper and it looked like a good size for my desk. While it did work as well a any Wacom, the screen was just too small for my monster man-hands. The 22HD was on sale and was just $500 more than the 13, so... got the 22HD. The 24 was…