LaBrie sounds almost as good as he ever has. Have you heard the latest album?
You're going to get a different answer from everyone you ask.
They've had various different eras where they've had different sounds and priorities.
There are a few outlying albums but as a general theme it's been along the lines of...
1st album - kind of early Led Zeppy, more basic rock stuff
2nd album though the 70s - very proggy, fantasy/sci fi stuff
80's - synth era, more song oriented
early 90's - back to basics guitar-oriented, less synth emphasis
early-mid 90's - bigger Floydesque production, some synths
ehh... tbh it gets a bit muddled from 80's onward, it'd probably be easier to describe them album by album but fuck that. xD
Fuck it, go for Power Windows, Moving Pictures, Grace Under Pressure.