Out looking for a cordless vacuum cleaner for around the house and am frankly brain dead now as to the number and types available. Looking for one that also converts to a handheld (for stairs) and don't particularly want to pay Dyson prices; are they really worth it? If I could get one with two batteries all the better as they all seem pretty limited on run time. Recommendations please people; say £150 - £200, or is that too cheap for a good one? I am fortunate in being 10 minutes from just about all major stores so no problem in touching and feeling.