I got to lay in a Clark last weekend at a hang and really liked it. I believe his was a 250 model. Can anyone tell me the difference between the NX250 and the TX250? Is the 250 the "roomiest" solo hammock that they offer? The fella told me they had on larger but I can't quite figure out which one he was talking about. I'm 6' and around 240lbs(but slowly loosing some).