I've had the DuBro blade balancer for a while and thought it would be fun to try the Top Flight magnetic blade balancer to see if it was any easier. For the past few hours I've been balancing 3 blade props and for me, Top Flight is actually a little harder and it seems like the Dubro is more accurate.
One thing I noticed on the Top Flight is the cones would separate from the prop from picking it up to add tape, so I have been constantly fighting that while the DuBro with their design with the spring, always stayed nice and snug, less time.