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I've only ever used the water based one. I try to avoid solvent based wherever possible.
For the woodwork probably Zinsser BIN Aqua as a primer followed by tinted undercoat matching the top coat and 2 top coats. So little greene undercoat if it's a LG top coat.
That's belt and braces and there's plenty of different options that would get you there. Quality of the ply/woodwork would make a difference too. I do sometimes do different things depending on the surface I'm working with.
I'd be surprised if you need 10lts for the cills/window surrounds etc. 2.5lts would normally cover a lot of that kind of thing.
OK, Masonry. I usually say masonry when I'm dealing with cills and stonework around windows, dental etc. The actual brickwork I usually paint with an exterior paint from Little Greene or F&B. I've never painted brickwork with Allcoat!
I know this doesn't help clear things up!!