I've owned and enjoyed my 3.5 for a couple years and bought it when they were brand new. I'm 6'2 and have room to stretch and there is plenty of room and height to change in even if your tentmate is in with you. It has weathered some serious east Tennessee storms and after a few year still looks like new. Be warned the floor is thin enough that things can poke through so even if you don't get the footprint I would suggest using something.
If it got damaged I wouldn't hesitate to buy another and the 3.5 has enough extra work on with minimal trade-off to be worth it. (I have used it for backpacking, kayaking, and car camping).