Not going to comment on every commentator, just a few that stand out for me (both good and bad)
As others have stated, Im also tired of Carfino. Was quite disappointed to see that he had returned to the coverage this year. At least he only covers a few games. Hated his monotone negative and repetitive style that was endured through 5 years of laboured channel 10 coverage.
For me, Dwayne Russell is a very important piece to the coverage. You may not necessarily like him, but he adds a high level of enthusiasm and with his experience, he can read the emotions of the game quite well. Not "technically" great, he's not there to be a basketball expert.
He's there to talk the league up, and engage with the more casual watchers that don't really follow basketball but are interested in it enough to watch the game. For that, Russell is pretty good. However I did find it annoying when he kept saying "14,000 people packed the arena" for a Perth game all night long when in actual fact there was 11,000 and that Perth have never had 14,000 to a game! Minor details for some, but was a bit annoying for me especially as it was mentioned all night.
Anthony Hudson has improved greatly. Another high profile caller there to help lift the profile of the league, Hudson has been decent while not spectacular.
The Perth guy - Adam Papalia is pretty good and has good chemistry with Brad Robbins. So, have been enjoying Perth's commentary team this season without it being outstanding.
I haven't heard a lot from the other "non-bball" commentators, but what I've heard from Brenton Speed, Matt Russell and Warren Smith have been much better than what Carfino and Rosen usually serve up, so I can't complain about them! Its also nice to hear different voices regularly I think. Keeps it interesting.
For the special comments guys - the past players: I like Tommy Greer. He comes across very professional, has a good voice and calls the game well in my opinion. Robbins is solid, despite being a little too Perth focussed. James Harvey has been unnoticeable, but that's probably a good thing.
Really don't like Tragagh's commentating. He seems to force a joke every time he speaks, as someone else also pointed out. Brad Rosen is the absolute worst though. His enthusiasm is cringe worthy, sorry.
Don't really watch much of New Zealand's home games but Im quite fond of Casey Frank though he sounds a bit goofy, he's quite entertaining.