I've had the strongbag vortex since I came to Japan three years ago, I like it a lot it is a a pretty solid bag and it balances really well with the heavy flight case hooked to it. I haven't had the need to change any of the parts on it yet and the wheels look like they have a little while to go before I have to change them, the only thing is that since it a a metal frame the bag is quite heavy for you to carry by the strap but precisely because it is heavy it balances so well with the flight case hooked to it but uphill or downhill it can be a pretty good workout since the two bags combined are a good 70 pounds, but it rolls quite nicely regardless. I recommend it