We love them! My "Transcend" bag with 4 wheels is well balanced and was super easy to move throughout the airport, garages and hotels we visited. The luggage is also very light weight, so it was easy for me to lift up steps and curbs.
Jim really likes his "Baseline CX" bag also because is is slightly larger, but he also would prefer 4 wheels to the 2 on his bag. Other than that small difference though, the Briggs and Riley bags functioned perfectly.
Love Love Love them!
p.s. We don't really love our smaller Samsonite bag..... It is not very well balanced and when full it falls over.
Also, the wheels are not optimally placed, so they tend to catch and twist and be a pain to push or pull around.