I'm a bit late to the party.....
I had the Crossfire for 12 months, and really didn't want to give it back. It went well, sounded good, looked great and was very comfortable. At today's prices, they are an absolute steal. I was never able to wrangle a drive of the SRT-6, so cannot comment on that model specifically.
Top Gear's review of the car was very poor. Not surprising though, given their opinions on US brands. Fifth Gear's review was more favorable, still less than stellar though, rating it as equivalent to the SLK320.
Competition for the car is generally considered to be RX8 and 350Z, both very nice cars in my opinion. Neither have depreciated like the Crossfire has, making it a difficult car to beat for the money.
Problems : seat heater failure (dealer fix), fan control module failure (dealer fix - on the spot), gearbox jumping out of gear (dealer fix - batch issue).
Hassles: got broken into (passenger window was smashed, surprisingly the local place had a replacement within a day), windscreen cracked (rock, again same day replacement).
Performance: 0-60 less than amazing, however it's torque was very handy in the higher gears (would cruise at 130-150mph without any issues). Behaved very well around the Nurburgring.
Fuel economy: If you are heavy footed, you'll pay for it. Wasn't too bad when driving lightly.
Audio system: Amazing sounds from the Infinity system. Wouldn't change a thing, but sadly doesn't play MP3s.
Storage space: Despite having a narrow opening, the boot/hatch was indeed large and able to take everything I needed without fuss.
Seats: Lovely heated, comfortable thick leather with good resistance to minor scuffs.
IMHO, it was a great car that generated a lot of interest. You get a few comments from the 'Jeremy said it's rubbish, so it must be' brigade, but that's to be expected. Drive one and see what you think.
Last point - they are a car with enormous grip levels, but once you lose traction, they don't handle like a 350z or RX-8. I managed to find myself in a pickle only once, before the rather effective ESP kicked in and saved me about 20k pounds. ;-)