I am 6'3", 210lbs and have a Bike Friday Pocket Llama and an alloy Avenir 6 speed. Side by side it is obvious that the BF Pocket Llama is a much better fit than the Avenir, though I think the Avenir would have no problem with a 6 footer. I got the largest BF available and it is just right for me. That said the Avenir is still comfortable, good for slower recreational riding and cost about 1/8 the price of my BF. It really depends on what you want it for. If you're looking to repace a full size bike then I say go Bike Friday. Otherwise, consider something else.