Dave,
I second what other members are saying here. Get out there and have a test drive preferably in an srt.
I have taken my base model coupe (with cloth seats...) on a couple 20+ hr road trips and while its definately not the most comfortable thing to drive it actually holds quite a surprising amount of luggage.
Do your homework before purchasing if your looking for a car to modify as these are in a completely different spectrum and not as tuner friendly as the 4 pots in the saabs.
In comparison to your current saab I will admit even the srt seats are no match for the Viggen. I am a fellow saab enthusiast and would definately swap them out in a heartbeat if they fit!
One thing you will be likely to notice coming from a viggen is just how stiff the entire chassis is in the xf. Even with the viggen rescue kit and bracing everything under the body panels they still tend to feel a bit loose. The crossfire will give you much more useable power early on instead of the kick in the pants the saab will give you in third gear. Sorry guys but my money is on the modded saab from 40-140 as long as traction is not a problem

.
I too gave up my modded classic daily driver in favor of my xf (I just wish I held out for an srt

)
So the xf is my daily commuter and I break out the classic for weekend fun. Nothing beats the feel of a modded turbo saab pulling in 3rd...
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