Thanks for the detail on the Rikon, not many on SMC have much experience with it. Also, I think Woodcraft has a deal on it right now for something around $1500 so take that into consideration as well.
Personally, I've decided on the Hammer Slider for my next saw.
Steve, also, as Shiraz said, you can search for specific Grizzly models and usually get lots of threads. Here's one with lots of pictures and discussion on the G0623X: http://www.sawmillcreek.org/showthre...ghlight=g0623x