I have a Makita LS1013 10" slider that works great. Makita has the motor at a 45 degree so you can cut 45 degrees bevels in both directions. Also, I couldn't justify going with the 12" version which only cuts an additional 1/4 inch. The 10" is great.
I picked one up at the Grizzly tent sale for 20% off and has a $75 mail rebate. Effective price of $316. Can't beat that.