I have an '01 Electron Blue Prelude. Its the smoothest ride I have ever had (not driven, but own). It DOES NOT vibrate at all, and shouldn't. Pass these two up, find one that does not vibrate. I'm already pushing 50K after only 2 years, and I cant even hear the idle when I'm at a red light.
Also, most Lude owners keep their OEM parts even after installing performance parts. That being said, there have been problems with people reselling Ludes with OEM parts put back in after using and switching out the performance parts(internal engine damage).
Be careful.
My $ .02