1 - Ask in DIYaudio where the best builders hang out
2 - I think you are going about this aaaaaall wrong.
Trying to compare one specific pair of speakers with a random DIY offering is bullocks10. I say this as a dedicated DIYer, but that's no way to buy for sound quality or to guess at what the final product would be like. This is like comparing a Nissan to some random truck based on tire brands. How on earth do you do that?
If you DIY you should do so for the experience, and if you are just starting and want to use expensive components rely on a pre-made kit.