When I lived in IL we used to put Kold Kutter ice screws in a cheap set of Cheng Shin knobbies. The 3/8" long screws went up front and 1/2" screws in back. They worked okay since the terrain was mostly sand with patches of frozen water. The tires would lose a few screws and were only good for a season. I tried using them up here in the Northeast, but the rocks would trash the screws.
Bought a used set of the original Swedish-made Trelleborgs back in '02. The front is still in great shape and has not lost any studs. The rear was in pretty bad shape when I got it and after two seasons I replaced it with a new Czech-made rear. I've ran the rear for three seasons and while the studs and knobs do have some wear it has not lost any studs.
Last season a friend of mine bought some Michelin studded knobbies. We did about the same amount of riding and at the end of the season his rear shows more wear than my 3 year-old Trellie. I don't have any experience with the Cheng Shin studded tires. What I do know is that on frozen rocky ground a set of automotive studs in Pirelli MT-16's works better than the Trellies, but the Trellies perform much better when there is snow on the ground.
For ice racing, Fredette tires are pretty darn good. I've got a set that's ~15 years old and have not lost a single screw (the rear is left turn-only). I've also got a Fredette left/right turn rear, but haven't had a chance to try it out. Around here the local hot-shoe ice racer, Jay Skidmore, builds his own AMA legal ice tires. He uses the same tires (Dunlop K490 front/Kenda Ice Master rear) as Fredette, but uses screws made to his specification. I did notice that when the ice gets fluffy Skidmore uses an Pirelli MT-44 rear, but he doesn't sell this tire.
Canadian ice tires use a screw with a longer head and are not legal for AMA sanctioned ice racing. I'm surprised the Canucks poo-poo the Fredette tires considering he went up there and kicked butt a couple times at the Alberta 24-hr endurance ice race.