two decks is a good way to go. And as one poster mentioned, making a play copy is not a bad way to go, since if its a fav piece of music, you can play it to death and simply make another copy if need be.
For those of you with MTR decks (10 or 12) and stock electronics, here is a very simple change you can make. If you slide out the two audio cards from their rack rails, directly behind the card faceplate, you will find 6 0.1uf red kidney colored caps. These are bypasses on the rail voltages coming into the card. Replace all six on each card with 0.1uf Nichicon XY series foil and film cap. These nichicons can be sourced from mouser or digikey. will cost you about 12 -15 bucks in parts. when installed the new caps will remove a blanket that was covering your speakers. The stock caps were metalized film, not as open sounding as film and foil. Takes about 15 min per card to do the change. If you do not feel comfortable doing it, plenty of techs that can do the change for you.