I have had the seasons pass since day one back in 05-06. All the video quality has improved since then.
In my opinion the best video as far as picture quality without question is Calgary. There are a handful of teams after that I categorize in the pretty good category. Those teams are Medicine Hat, Kelowna, Spokane, Brandon, Vancouver, Victoria, Red Deer, Edmonton, Lethbridge and Prince Albert. The video quality is pretty good for those teams and they all show replays and some have multiple cameras.
The worst teams vary. I would argue Kootenay is the worst but part of that is due to the arena being so dark. Makes the video appear dark. They only have one camera and the zoom function isn't used often enough if you catch my drift. They often have audio problems as well, although not so much this season now that I think of it. That was more an issue in the past. However that being said three other teams have been very sub par this season. Portland, Moose Jaw and Swift Current. Portland has never had great quality video ever but what's worse this year is their play back. It's not smooth. It's choppy as hell. And it's been like that all season long. Kind of ridiculous it hasn't been fixed by now. Clearly it isn't going to be fixed this season if it hasn't been addressed with the season almost over. Moose Jaw has had the same problem with video play back this season. Last year I thought Moose Jaw had a pretty good set up. I would put them into that pretty good category I listed previously. But with the video choppiness problem this season they fall into this category for me. Swift Current's video is just very dark and they have a really stupid scoreboard on the bottom left of the screen. I find it really annoying as it takes up part of the screen. Their video quality is also one of the worst in the league, IMO. On the plus side they do show replays but it's little consolation given the negatives of their broadcast.
I believe the only teams I haven't mentioned are Prince George, Regina, Saskatoon, Seattle, and Tri-City. Prince George is okay and they will occasionally show replays but sometimes their camera work is bad. A few times during play or even during fights the camera would focus on the crowd for a long period of time and you would miss the action. They also seem prone to having audio issues. Regina recently changed their broadcast and added a scoreboard on the top. Their video is decent but I find the scoreboard on top is a little too big for my liking. Takes up too much of the video. Saskatoon is actually decent. They have a scoreboard on top as well but it isn't as annoying as Regina's. And their video has improved. Seattle's is also decent and improved. Tri-City has a similar problem as Kootenay in the not using the zoom function enough for my liking. They only have one camera as well. Not my favorite place to view a game.
If you have any specific questions about any of the teams feel free to ask.