i use 100ft hose all the time ,my ninja has just the two vacs i never break it down and it performs well all the time, i dont use a hose reel just load it in the van in a sort of figure of 8 when u get used to it takes about 30 secs to load into van and takes up lot less space than u think, auto dump is really handy if u are doing more than couple carpets,my v2 is built in i also hav a tank heater but is rarely used as i fill from my house every day with hot water, to haet cold water in tank would tank 30 mins!! and rember u can only hav one heat option on at any time ie v2 or tank heater not both , also y bother with 3rd vac when if u need more power just hook u old machine upto the exshaut of your ninja thats all ashbys do with their 3rd vac, if i hook one of my other machines to the ninja i hav 4x 3 stage vacs