Gene is great. He's just what you want from a 'host' -- likable, funny, a bit of a ham, players like him, polite, etc.
Jack is good and professional, just not to my taste. Although he calls the games very well, has an appropriate voice, and is perfectly prepared and knowledgable about everything, his "carnival barker" style of calling games leaves me cold. I also do not like the random (failed) jokes he attempts to insert into the broadcast... and he never lets them go, endlessly banging on about whatever 80s' pop-culture reference he's just brought up.
Louie seems good at first exposure, but the more I get accustomed to him, the worse he gets. Basically, he doesn't really say anything. The 'color' guy (well, they used to be) should have insight into the game and should be entertaining on some level. Jack & Louie invert the formula, as Jack tries to be a clown and Louie tries to be "mr. cool". It would help Louie a lot if he would (a) speak louder (he mumbles incoherently half the time) and (b) avoid his favorite cliches ("tickling the rafters", "goes to work", can-opener").
Anyway, they're better than the previous guys, so I'll take it for now. About 50% of the Oilers' games I watch on the road-teams' feeds anyway.