We had a 1999 S70 GLT and currently have a 2004 XC90. We traded in a 2005 Saab for as 2005 S60T this past weekend, and love the car. Feels heavy, handles well, and we expect it will be very safe and reliable. We have had an excellent track record with our Volvo purchases. My wife likes the car better than the Mercedes C240 we had (before the Saab), and hopefully it will be OUT of the shop much more than the Mercedes. Gets better mileage than the Saab we had (both were turbos) or the Mercedes.
Design (interior and exterior), safety, reliability, gas mileage, quality of leather, "creature features". Excellent pick-up when accelerating, handles and brakes great. Great value for the money.
Turning radius (but this is better than the radius for the 2004 XC90). Need handle/button/lever to open the trunk from inside the car, without using the remote. Ours doesn't have "homelink" which I wish was standard.