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The TF-100 is the gold standard here. Taylor k-2006c is just as good, but more designed for professionals while the TF-100 is aimed at the residential pool. Not a big fan of the Colorq, it isn't nearly as reliable. Poolmaster is missing many of the tests you will need, don't bother with that one.
With a salt system you'll want to consider Taylor k-1766 salt test. It's more accurate than strips and it's always a good idea to have a separate salt test and not rely on the number the SWG is showing.