I have Limbo in various sizes and a Salsa cabin spinner. The reinforced corners on the Limbo can be an advantage - damage to the corners of one of mine attests to the rough treatment our bags get. But if you are an overpacker I'd say the frame and clasp structure on the Limbo might not suit you for the reasons outlined by SometimesFlyer.

My Limbos are in Midnight Blue - it's a gorgeous colour. Understated yet still distinctive on the carousel.