Do one 50'... or even 60'. I have a 60'. It is so much easier to just use one outlet than to use two (pulling the hose out twice, moving the attachments around the house, etc. Having one outlet with the attachments stored nearby is really convenient.) Do you have a convenient central location for the longer hose? Having just one will save on not needing all the extra tubing, also...

I am not sure if you need a slightly stronger vacuum for the longer hose.. hopefully someone else can comment on that.

agree with lolauren - (who also told me I'd be fine with the 60' when i was debating what to do...great advice) :)

I went with a 60' in basement, a 60' in the upper and 2 on the main floor (40 each, I think just bc a 60' wouldn't do it the way the floor plan is laid out)

The actual vacuum is important though - depending on house size, etc - we went with Honeywell H902 - LOVE IT! There is nothing this vacuum doesn't suck up...including on carpet :)