LaBrie's stuff is not mind-blowingly original, but it is fun, well-crafted and performed music that I get a lot of enjoyment out of. Except the Mullmuzzler albums, which I never cared much for. I loved all of EoP, and I remember when I got IR, having not heard a single note prior, and Agony came on, and I was all WTF IS THIS NONSENSE?! and then a minute or so in I was rocking out!
Haven't heard any Tate solo stuff, and don't care much for Alder's voice.