Evening, Zach,

Don't wait, don't hesistate: buy one.
Remember, this is a Mercedes engine, hand built - one tech., one engine - and will probably last as long as you want it to. The Crossfire, Coupe or SRT, still ranks as one of the best, most exciting cars I've ever driven (so far!).
Speaking from personal experience only: I've had no serious issues with either car. I've had the CD head replaced twice & the passenger speaker replaced, both under warranty. Beyond tires (which are expensive) & oil changes (which can be expensive) nothing else has gone wrong.
Good luck!