Jim, a lot depends on your room size as well as what you plan to use it for, what % of music and/or movie watching?
I owned a 350 for a year or so and was very pleased with its performance. Originally, it was used upstairs in our living room area which is about 15' x 20' with slight vaulted ceilings. I would say I use my system for 60% movies and 40% music.
I've since completed my basement refinishing project. The HT/RecRoom is about 30' x 30' x 9' ceilings. I updated to an EP500 a few months back, but not before I used the 350 for a few months. The 350 did a very good job in that large space, and most people would be satisified.
The problem is all these other crazy Axiomites that said I needed to give a 500 a chance. I'll tell you, the 350 is no slouch, but the 500 makes the hairs on my legs stand up some times.
How big is your room?
Another option, is to check the Audition Thread in the Hearing Things forum, to see if anyone is in your area that will let you audition a 350.
Good Luck