I would read up on how vtec works first before deciding which car to buy. I would strongly recommend searching for a decently priced gsr over an LS/SE; you'll appreciate having a B18C1 (vtec motor) versus a B18B (non-vtec motor) in the long run.

The difference in engine life between a vtec honda motor and non-vtec honda motor is negligible; there are plenty of gsr owners with 200,000+ miles.

Shingo