as with most things its all down to money ,we need a extractor we have 2 national hives 14x12 i think we could spend up to £400 but would prefer to spend £200 we would like a quality product with parts availability ,ideally dont mind second hand ,but im thinking maybe i might need to be able to clean a 14x12 frame oneday, i have read some 4 frame spinners take 2 14x12 or should i just get somtehing for the national supers and find some other way of extracting 14x12 if needed