Quote - Buy a Spyder 4 here at this link. I run four 27" monitors for my products and use a spyder 3 unit and all four of my monitors are perfect. Well as perfect as a Samsung SyncMaster SA550 can get.

Cost right now is around 250.00 but they do go on sale once in a while. well worth the money, IMO.

Tom

I've been meaning to get something like that.  Is it really necessary to get the most expensive version (the one you link?)

The cheapest version doesn't let you install it on more than one computer at a time, so that one is not for me.  But what about the mid-price models?  I gather the most expensive version lets you calibrate projectors and match monitors when you have multiple monitors attached to one computer...but if I don't have a system like that, will I be fine with the $170 version?