This rack rules. I have the NV with the 2-bike add on and it's fantastic. I can load any type of bike on here no problem -- big all-mountain MTBs, kids bikes, my wife's heavy beach cruiser, road bikes, etc. Be warned though, with the 2-bike attachment, it's pretty heavy. I can mount it on my truck myself, but it might be too heavy for some in 4-bike mode. 5 stars.