I use them almost only with Callaway Tour S and love them. The meter is just about manageable with Tour SD balls but so much nicer with Cally's.
And seeing a 3 iron float up, land on the green 200+ yards away and then stop within a couple of yards is a great feeling, something I don't think any other iron set here will give you, not even the i15.
They're even a huge bargain if you compare them to the Tour PLUS iron set at 2,990 credits. How the hell can that price possibly be justified? Is WGT preying on the new player who thinks wow, 2,990, they must be great? Seriously WGT, either drop those things from the shop or make them a realistic price, you're charging Ferrari money for a Lada there.