Glueless Wigs, to buy or not?

I have my short hair style for 2 years. and I really want to change it. However, it takes a long to have a long hair. So I deside to buy the lace wigs. Wave or straight, which should　Ｉ buy?  It is really a problem.

 Beyonce's hair syle is wonderful, but I think these two wigs don't suits me, and I don't like these colours.

 Now my hair is like the right from picture, but longer than hers. And the left hair looks good.

 Hair from Kim kardashian look so sexy.

The red long hair looks so pretty from Ariana.

 I think straight long blond hair suit beyongce best.

So cute is Beyonce right.

And I also surfer the Youtube, and find some Video about lace wigs.
For example, this Glueless Wig
is about a long wave wig like the hair style from Kim Kardashian. I think it's really good.