I have a 9.3x62 550 Lux. As other posters have said, you get iron sights (decent but not great rear sight and a really slick front sight that allows you to change beads/blades with the touch of a button) and the hog's back stock. The stock has been decried by some as an aesthetic disaster. I suppose if you only know or like American or English stock styles it is. But if you can live with the continental lines, you'll love it. I was neutral on the styling until I shot my Lux for the first time. The 9.3x62 is getting up there on the recoil scale and the hog's back handles the recoil brilliantly. It's also a fast-handling stock design and points well on snap shots and such.
If you can find one in 6.5x55 try it. I have a 550 FS in 6.5x55 and like it. It has the right twist for heavier 6.5mm bullets and the CZ bolt face is cut right for the 6.5 Swede's bastard head dimensions.
And, yeah, that single set trigger is pretty nifty. On the other hand, the CZ triggers are fully and easily adjustable and I have gotten the pulls on both my rifles to the point that I really don't use the single set feature.