I had a similar decision to make as you but only when the iPad Air and rMini (both wi-fi units) were the new kids on the block last year and out base PX was blowing out the 4th gen iPad (w/ cellular) for $330.00...
While I liked the rMini on its own, I didn't like the color range of the screen when compared to the Air and 4th gen.
While I liked the weight of the Air and the screen compared to the rMini I liked the screen of the 4th gen better.
On iOS7 when released the 4th gen didn't crash for me but a rare couple of times while the rMini and Air crashed several times a day (I'm assuming to the M7 co-processor that was new with the A7x in those two units vise the A6x in the 4th gen iPad).
My 1st gen iPad was gifted to an extended family member and an immediate family member got my 3rd gen 64Gb cellular iPad...I decided to keep the 4th gen iPad due to the very low price, good screen and the fact that all my 3rd gen cases and accessories (execpt charge cables) still worked with it (speakers didn't matter due those accessories being BT).
I also wanted a 32Gb model but couldn't justify the price increase when I got this so cheap still brand NIB!
The 4th gen model is still a strong contender and for my personal use I'll pick up an rMini eventually when

increases the ram and makes the smallest size 32Gb (here's hoping for the next revision

).