It is all a matter of preference. Some like the STOL performance of one vs the other, some like the classic look of the wing tip bows. Never heard of hp affecting anyones decision.
HP won't change my opinion. I have a cub with extended wings (ailerons not extended) with droop tips, for 21 years now. I got a good deal on this cub and they were already on it. I've gotten used to it but like the round better. Off airport stuff I have a lot less clearance at the tips to bushes ect, especially if you taxi into a hole or depression. They also block your view some in flight. Getting ready to rebuild in the next year or 2. I bought a set of Dakota stock cub wings for the rebuild, these are coming off.