recommendations for covers/locks?

I'm going to purchase a GS500F this weekend, and I'll have to park it on the street during the riding months. There are 2 other motorcycles out there I've seen parked daily for the past couple months as well, so I'm not too concerned about someone lifting it into their truck and running, but Murphy's Law and all..

so, what I'm looking for more I guess is what kind of lock do you feel performs best, is easy to transport (I'm not sure if the GS500F has any place to store cargo, much less the size of it), works well with a motorcycle cover, etc.

Thanks!