Y'know, Think This is all I think I've ever encountered from Toxik, and I'd never heard of Realm before. Good stuff. I'll have to give it a look in more detail sometime. Though I have to ask, what's so wrong with Think This?
Anyhow, Artillery are the band that springs to mind for me. By Inheritence and B.A.C.K. are probably your best bets vocally with their original singer, but some of the singers they've had on their more recent albums are good as well, though they've eased off the tech thrash gas pedal a little bit in their songwriting.