I have a battery of Minolta and a couple of KM lenses and ONE Tamron (the 70-200 f2.8 that I use only if needed, since it is too big for everyday's evereything) -so, even if the "most" part of your question does not apply to me, I did check "Tamron" too.
A tricky one to answer. I have three s/h Minoltas, one s/h Sigma, one (bought new) Tamron, and a Sony kit lens. I use the Tamron 60-70% of the time. I therefore voted for the mixture.
The next lens I buy (s/h) will be either Tamron, Sony or KM (the 11-18), depending on catching on on eBay etc.
Nex 5, Nex 6 (IR), A7M2, A99 and a bunch of lenses.
Mixture here as well, mainly because of what I actually use. I do not really count my 17-35mm and 28-75mm as being 'Minolta' even though they are labelled Konica Minolta - really they are a Tamron lens brought in by Konica after they did the merger. I actually use the 28-75mm most, followed by the 28-105mm Minolta as an alternative when I need a bit of range but don't need better f/4 performance. Shirley's main lens is the 18-250mm Sigma OS and my wide angle is the 12-24mm Sigma. My APS-C main lens is the 16-80mm Sony CZ, and we also have an 11-18mm Sony (which, again, I consider to be 'a mixture'). Then there's a Sigma 16mm, a Sigma 70-200mm f/2.8 and converters - but also Minolta 50mm macro, 100mm macro, 50mm f/1.4, 28mm f/2, 100mm f/2.8SF and 500mm mirror, and 25mm f/2.5 micro lens. Plus, the Sony 70-300mm SSM G.
There are more Minolta branded lenses in my cupboard than any others, but I make most use of lenses which actually came from either Sigma or Tamron factories.
Looking towards an a850, I've decided to buy only used FF glass right now. As a result, I'm scarfing up old Maxxum/Dynax camera deals on e-bay. That gives me more Minolta glass than anything else, but normally I get a Siggy or Tammy, too. I'm still looking for that Beercan bargain or some other great lens cheap, but right now that's the cheapest way for me to pick up FF glass.
It also means that my brother's family will get some updated Maxxum bodies and flashes for Christmas! He's still on film with the original 7000.
Three are labled "Minolta". I think the 100-400 APO is actually a Tokina
Two are labled "KM". Both are actually Tamrons.
Two are labled "Sony" One of those is a Tamron.