I started off with two Langstroth hives because that is what I was familiar with (I'd had one 25 years ago). I think accessories and add-ons might be easier to find for these hives, as well.
I've visited a local beekeeper who mostly uses TBH that he builds himself out of recycled cedar fencing. They are cheap and easy to build, apparently. He uses the crush and strain method to harvest honey, rather than a spinning extractor. Checking on brood and honey seemed to be pretty straight forward and easy. Just lift off the lid, and start working your way down from one end to the other.
He didn't have much in the way of SHB prevention, and I'm not sure how one would do OAV treatment in a TBH, if one were so inclined. This beekeeper did very little for his bees as he was promoting a treatment free approach. If the bees couldn't handle a situation on their own, then they wouldn't make it, and their gene pool would be gone. Only the strongest, and only the ones capable of fighting off diseases and pests on their own would survive, hopefully strengthening the bee genes.
After looking at his set up, I was satisfied that I had chosen the right way (for me) to begin.