As far as which one is best that should be an easy answer. Which one of the props you listed has a proven record? There is only one, the Hydromotive. My personal opinion is that the Maximus needs work. I don't think it is quite right. I'm sure with time Mercury will get it working right but for now I believe there are other better options. The entire Hydromotive line speaks for itself. No other manufacturer has more experience with Bravo style 4 or 5 blades than Hydromotive. Hydromotive was the first to develop the 4 and 5 blade prop for the Bravo style outdrive. Can't say anything about the"houston 5 blade".
You will probably need a 24 pitch 5 blade.
You should expect an increase of 5-8 mph in the mid range, planning will be much better and top speed the same as your stock Bravo 1.
The Hydromotive and Mercury props are priced without lab finishing.
As far as polished of brushed the polished look better and don't rust as quickly. You should expect the same top end speed with either polished of brushed.
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