I purchase the Pet Vax about 18months ago as my mum had a Vax from years ago and loves it and it is still going. This one I purchase has been only very disappointing. The attachment head gets stuck on the wand section (My husband cant even pull apart) which makes it very difficult to clear blockages. Have had blockages in the hose part which have not been any better to clear. Have found it harder to get filters from shops and have to order online through the Vax Shop. Not happy.
It shampoos the carpet reasonalby for in between cleans
Difficult to pull attachments apart. and suction deteriorates quite rapidly and frequently with blockages.

A great unit, works well and really cleans.
Hose and telescopic wand are excellent, no more back aches from stooping but it shortens to store in cupboard.
Cleans pretty well on carpets, not as good as professional removing heavy stains but leaves them clean and fresh in general.
Fairly easy to assemble and dissassemble from vac to washer.
Good suction, large capacity bag, cleans well wet and dry.
Reasonably quiet.
attachments fall off outside where they are supposed to sit.
Having to remove hose before removing bag means ripped bags if you forget or someone else tries to help and sometimes dust etc falls out opening.

Have had ours for nearly five years and haven't had any problems with it and it does get a fair bit of use (2-3 times a week).
Great suction, easy to operate and handle
None that I can think of

I have had mine for a month now, thus far I am happy with the performance. I have washed the carpets in the bedrooms once, they looked fresher. I have taken to vacuuming everyday because this vacuum does such a good job & it is easy to use. We have a long haired dog & a cat as well as teenage girls so it is great for hair & getting the hair off the couch as well.
This vacuum has great suction, the bags have a large capacity, it rolls around easily & gets all of the dog hair off everything.
The little extra heads do tend to fall off the part where you can keep them.