I have used 2811's of different voltages, power injection, with no real problems. the one thing you must watch out for is the speed of the 2811. Must be high speed modules. The only way to know, order a small sample and try them out.
I have tried the following, and they have worked for me. Just keep in mind you must use power injection for anything that is not 12 volt, or requires more than 4 amps, and only 128 nodes.
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LoginThe 5 volt flex strips that I have tested, used the ws2812 led chip. The ones being sold now use a ws2812b, I have some, but not tested them, should still work.