What do you want to know about the Lexus IS line? I would check out Lexus.com for some information on the different models and what makes them different. I would then talk to one of the dealership guys on here to get more information about what might suit you best (FchampOH, ISFChamp or Flipside)

Let us know how we can help you out
hey, friendly group here. I'm just starting my search and will follow your advice. I don't want to take this thread too far off topic, but I thought I'd do another reply to just say where I currently am with my car search:
When I decided a little while ago on getting a car again to replace my 2004 Accord EX Sedan, I decided I wanted to own an IS again. I want a performance entry-level luxury sedan and because I had an IS before and had a good experience with it, I thought I'd buy one again. I'm hesitant to go German because of the maintenance. I know that BMW has factory scheduled maintenance and stuff for free for 50k miles, but I'd like a car to keep for a long time (My '04 Accord is at 122k miles now). And nothing else Japanese (from Acura or Infiniti) really catch my eye.
The IS 350 is what I was always leaning towards because the IS-F was fairly out of reach. When I first saw the prices in the mid $60s. But now I'm seeing sales now in the low, low $50s and while still out of reach, I think that means I could do a used one w/ low miles if the right vehicle and owner presented itself. If even lower prices new are possible, then maybe I could go new on the IS-F.
Let me do some more research and talk to the dealership guys you mentioned. If anyone has any suggestions for good threads to check out on pricing, please PM me.