I like those, but I do like selective colouring in B&W photos, so I'm biased. Personally, I think no 1 is the best.
Are you simply using the desaturate feature in PS to do that? If you search through the recent threads, cyKey posted a good PS action that gives much better B&W photos. Doing that, with the colour original overlayed with a layer mask gives much better results, I've found. You then simply paint over the bits you want coloured (like, I assume, you've done there).
Good work though.