Love them whoops! I've become a fan of BetaFPV and have several BetaFPV 75X 2s whoops. They are great fun inside with a 10-20% throttle cut (can be done in betaflight but easiest to do in your remote with OpenTX). And if you want to fly outside, just ditch the throttle cut. As much as I love flying my 5" out at the park, in all honesty, I get more opportunities to fly the whoops at the house.
If you are flying whoops inside, you're going to be doing the "crash, rebuild, repeat" cycle for sure. Which brings me to another thing I like about the BetaFPV whoops. In the past, when I had to replace the FC or ESC on my whoop, they were two separate boards: a $30 FC and a $40 ESC.
BetaFPV has a new board that is truly AIO. FC and ESC all on one board for $40 bucks! Requires soldering the VTX and receiver on, but that's no big hassle.
RDQ is blowing out several of it's whoops.
Here's a link.
I bought another 75X (for $90, down from 130) and then sprung for the Speedix Rex 80 (haven't even opened the latter).
Let me also put in my vote for Raceday Quads having the best customer service. They are quick, responsive, and I've never had a problem they couldn't solve. There are several good players in the industry, but, based on experience, I look to RDQ first!