When you die and go to heaven they will probably give you one if you ask. :)
there are lodes but i can name a few;tetraminx, pyraminx, pyramorphinx, megaminx, gigaminx, teraminx and petaminx.
Since the petaminx came out, more advances have been made. Drewseph was supposed to make a void teraminx, but didn't have the money, so he just skipped to void petaminx. Now, drewseph is in the process of making the tripple fused void petaminx. Nobody actually know when it will come out. It could be a month or a few years. It might not even ever come out.
That depends on what you expect from the cube, like speed, stability etc. If you want a fast cube that is capable to cut corners very well, I'd suggest either a type AV or an F-II. Also the ShengShou and the Dayan ones are awesome. You can buy those cubes at Lightake, which is a popular and trusted speedcubing store or Amazon. Check the link below.