I've heard good things about the Wasp, but never tried them.

I went with Rocket Ultimate Steel 75 this year and have been happy practicing with them but have yet to put them to flesh so I'll see in a week or so.

My partner shoots the Nitrons and loves those as well.

Sonic's are new this year and I planned on giving them a try but there are plenty of similar heads that have already been tried and tested so...I'll wait for the reports on them myself before I buy them.

I really like the Wac'em archery's "Triton" as well. 100 grain cut on contact that was the only head that every single one spun true straight out of the package. If they made a 75 grain....that'd be my head for sure.