I've only driven a Spec V, and I think it's one of the most fun 4cyl FWD cars I've ever driven. However, I hate the rears of both cars. The Sentra taillights are retarted...and the SRT-4s sit up way too high in the back, like all 2nd gen Neons. Performance wise, turbo Neon has a lot of bang for the buck. Of course you have a turbo car vs. an NA...but they each hold their own in their class, depends on what you want the car for. SRT-4 interior is well done w/ aluminum trim...the SER has a little more ricer feel with "colorful" fabrics/stitching (at least on the '02 they did). My .02, g'luck.