Depending on what you want the wool for, the different breeds of angora have different qualities of wool. For myself, I chose the English because it's the softest and it's not commercially grown. Which means the yarn produced from the rabbits here is higher quality than commercial angora. Which means it sells for more and faster.
Angoras can be very profitable, but there's a few hurdles to get over. First is the care and keeping of them. They must be kept on wire, anything else and you end up with a mess. Think of a mobile Swiffer collecting up all dust and debris on the ground. Depending on the breed you get, they may or may not molt. We have the molting lines of English, so they molt three times a year. When they're molting, their wool can be easily plucked off a little bit at a time (like your dog in the springtime), but that takes several hours or more versus about forty five minutes to shear them. If you're keeping them as a fiber herd and not show bunnies and they're being sheared, there is actually very little grooming involved. Right after shearing they have less hair than most rabbits and by the time it gets long enough to need grooming, it's time to shear again.
Then, after you get the wool, do you have a market for it? If you're using it for yourself, then that doesn't matter, but if you're trying to make a profit, then having a market and how you have access to that market matters. A lot of craft shops and boutiques want at least 50% commission for selling things which take a lot of the profit out of it.
There's also not that many breeders of angoras, so you can sell the offspring pretty easily. The bunny sales usually pay for the herd maintenance costs which then leaves the bunny fluff as pure profit, at least, that's how it worked around here until we started experiencing decreased litter sizes. Once we get that figured out, we should be back to pure profit on the fluff again.