I'm sure everyone has their favorite. I currently use a PSC Elite med. coiled pole. However, I mostly do EFP/ENG stuff. If you're talking about feature film production, regardless of the brand, you should make sure the pole will extend at least 12' if not more. I would also get one that does not have a cable inside.
I have a 16ft carbon fiber K-tek pole rigged for external cable.
I went w/a 16 footer because I knew if I got a 12 footer, I'd need 16 feet the next day. I've only deployed it full about 4 times in 12 years, but the extra length does come in VERY handy as a counterweight. It's a LOT easier to hold a boom with a bit extending behind you to balance the weight. The particular model I have can be extended or collapsed fairly quietly. I've needed that when I get backed into a wall or corner and need several lengths to cover the action. YMMV.
I have med and large PSC/VdB cabled poles for ENG, and L and XL (18') VdBs non-cabled for features. I'm not so lucky as Ty, for I have had the 18 footer at full extension with an MKH 70 more times than I care to remember... Now my back hurts...
If you get an internal coil cable, you will have to develop a very steady boom technique... The cable has a tendency to rattle around if you're not careful... But the convenience is great.