Can I use leftover bottles from commercial wines I have drank for my ho' made wine?

[closetwine]

Very good point.

If you think the wine will be consumed within a 8 to 12 month period, then the benefits of cork are negligible. OK to go with the screw caps.

I would still miss that wonderful "POP", however.

Screw tops def. lack the pizzaz of the cork, but they are easier and depending on where you buy cheaper. (not much) It really depends on how fast it will be drank, and how fancy you want it.
Note: If your trying to impress women, go with corks!