Dude,
Red tops are the only way to go. spend the extra cash, it's well worth it. My red top has been in 2 cars before my Esprit. LOL, If I sell a car my red top is coming out of it! LOL...... Plus, go to Any of the motorcycle shops (i.e. Crossroads, East Coast Cycles or Philly Kawasaki [castor and aramingo]) and get yourself a Battery Tender. It will save you some headache.