I haven't had any experience actually using any of the tops, but I'll tell you what I do know -- Guy Cotten has quality stuff. Yeah, maybe they're cashing in on the dry top craze, but wouldn't you if you could? At their factory in New Bedford, you can have your items fixed and/or replaced. Every commercial fisherman I've talked to that wears Guy Cotten loves it and wouldn't get anything else.
RRC had a Simms top whose stretchy rubber parts cracked.
Otherwise, I've heard nothing personally about the other companies mentioned.
And I don't know what this is, but I love it:
