They are both no real alternative.
1) They need a modern Version of IE. So you need a Windows after XP to get a IE that is not IE6.
If you have a modern Windows, any newer Firefox (42+) that is not the "eme-free" Version will work under YT.
2) They are not Open Source, so they are not thrustworthy.
I used FF 47.0.2 (i have XP32) with this Tutorial
http://www.msfn.org/board/
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