Andy, I thnk there are basically 3 classes (and price ranges). The off shore basic solution, these are $18xx ish (not installed, can even be bought at Costco I believe). We have 3 of these, the center accessories slide (not roll) back and forth. They have an american pump though. Perfect for what we need them for.
Next up is off shore, but beefier, and the center accessories roll on a track. We have one of these, nicer for sure, but in the $3xxx range.
This is the one we have, I see they have a number to find local support.
http://www.qualitylifts.com/auto-li...car-lift-truck-lift-parking-lift-installation
Dont have a bend pak, but I sure it might be better, dont know about $, but might be more.
One of the main factors for what we have is the local dealer that I have become friends with, that set them all up for us. As mentioned above, not hard to put together, but I just wanted it to get done so had them all delivered and installed.
Accessories, assuming your car (or what you plan to put on it) does not leak, you dont need drip trays. If you plan on working on the car, vs just storage, get the rolling jack. If you just get the "jack tray" you will only be able to fit a bottle jack under the GT, and it is a pain. I now have the integrated scissor jack. Also a "+1" on the extended ramps, I did not get them, and have to use a 24" 2x10 to avoid a scuff of the splitter. None of ours are bolted down.