Is Wix Professional enough?

Hello guys,

I made my portfolio using wix, and so did a lot of friends of mine.
But I am in a doubt about if Wix is considered professional in the industry?
It uses Flash and is definitely slower than HTML5

I made this using wix, I don't find it appealing enough. I wanna know what you guys think of it.

http://avichalsingh.wix.com/portfolio

Thank you.

Avichal
Game Designer