You said you use to really like it... how long did you really like it? Years? A few months?
Sometimes you need to take a break from a game. any game ... it's not going to be your be all end all forever and you will probably go through another time of disinterest eventually. If the game not running well was a big part of all that and that's not a problem now then give it a try. Not sure I'd suggest a bundle personally. I'd get something on sale unless your real interest is not just to play in general but to play ROM also.
If you've tried your game on your new computer and you're sure it runs well and you're excited with playing what you have but want more.. go for it.
