The Boldclash BWhoop B06 is a good entry-level brushless whoop. However, it has a few problems for me. First, the motors are not good. There are reported problems of shaft collets and bushings falling off. Second, the FC has no OSD. Third, I prefer my whoops tiny, and by that I mean 65mm (okay, a smaller version is supposedly out but it’s not yet widely available). So I build a better BWhoop B06.
The Kingkong Smart100 is a good and popular brushed micro quadcopter. However, the big 8.5x20mm motors have a tendency to burn the MOSFETs if you fail to cut the throttle during crashes.