Can anyone recommend a good bag size and type for an 883 Sportster? The wife and I are taking a trip this summer, and she really needs to have some carrying ability. I know I will need to get a tail light conversion thing to move them back, but I'm unsure what size of bag I should get. I don't want anything gaudy looking or "bigger than the bike" so to speak. Preferably leather. Thanx in advance for any ideas!