i have a couple of the axminster/rutlands type. They are ok. just. locktite the bolts or they rattle free. I wouldnt buy the same again, there was a discussion a little while ago about lifting something heavy onto a vbase, and the base seemed to be much better, or I would have some of the felder type ones made.
Rutlands must be due an offer on them very soon. buy one get one free, or 2 for a reduced price or something.