I own quite a few of the references you are considering or that have been recommended I would go with the 214270 because of the versatility it affords a small collection. While I like the thought of a Speedy, I think with two Omegas it would be nice to diversify your collection.
BB58 -- I really like the look of this watch but am disappointed by the execution. Specifically there is no half link for the bracelet and only three notches of adjustment in the clasp. I personally believe this is to differentiate Tudor from Rolex and their bracelet/clasp combination. I even tried adding the easylink from my Explorer to see if that would work, but the screws are different widths. I have had the BB58 less than 3 weeks but am considering selling it already because the bracelet does not fit me well.
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