We have a V6 Animal (£199 refurb IIRC) and for a few months I was greatly impressed with it compared to hand helds I'd used before. But one day I got our £50 VAX somethingorother out of the cupboard to see what I might be missing with the V6. Turned out to be a lot (we have a permanently shedding Border Collie).
I still think the V6 is great, but it's our great 'quick whizz round' cleaner, and I do get sick of the tiny container clogging up with dog hair very easily. The Vax is a pain with the cord, but it inhales deeply attached junk more quickly and only needs emptying at the end of cleaning.
Many folk have done away with corded altogether. I don't see that ever happening for us while we have dogs and carpets.