Re: Need help in purchasing my new hookah.
1. Singled hose is usually the better option.
2.I have not seen a KM modified from one to two hose, if you want that option, I'd go with a MYA, since you can just buy an additional hose adapter, put it where the purge valve is, and they already have an auto-seal on them, so you don't have to worry about holding your thumb over the hose when not smoking.
3.**********.com has a great selection of KM's.