A particular brand doesn't come to mind but here are a few thoughts I've 'collected' over the years.

Measure the Cubic Feet of your bathroom and bring that info w/you to the store. Fans are sized by the amount of CF of air that they move.

When venting, the BEST way to vent is directly on an outside wall. HOWEVER, if you plan on venting through an attic (to the outside), be SURE your ductwork is insulated because, if it's not, it will drip moisture back into the bathroom when it shuts off.

Get a vent that prevents/detracts birds from nesting in it. (Birds LOVE high places like that ...)

Yes, get one that operates on humidity. Remember, unless you can 'over-ride' this feature, you won't be able to turn the fan on to use if to vent any 'stinkies' from the BR.

Pick the right 'location' on the wall or ceiling. It should be near the shower/tub/stall but not 'in' it.

Wait for others to reply with brands. My best to ya and hope this helps.

Jay J -Moderator

PS: You can buy pre-insulated ductwork for the fan vent ...