Maintenance-Free Replacement Batteries
I recommend and use the same battery as Iconic944ss.
The early 1995-1998 bikes have a marginal charging system so I'd recommend staying with a replacement battery having an equal or greater capacity than the stock battery.
As a reference, here's the specifics on the stock batteries:
Yuasa YB16AL-A2 (16 AH, 200 CCA, 11.5 lbs.) (stock battery pre-2001)
Yuasa YT12B-BS (10 AH, 125 CCA, 7.6 lbs) (stock battery post-2001)
So I'd consider the following maintenance-free batteries:
Fiamm-GS F19-12B (19 AH, 200 CCA)
GS Battery GT12B-4 (12 AH, 200 CCA, 10 lbs)
Yuasa YTZ12S (11 AH, 210 CCA, 10 lbs)
Power Source WP22-12B-4 (10 AH, 220 CCA, 15.5 lbs)
Odyssey PC680MJ (19 AH, 280 CCA, 14.7 lbs) (my personal choice)
The principal advantage of using a larger battery is to be able to restart repeatedly. If you regularly don't ride long enough to recharge fully between restarts, stay with a larger capacity battery. A lower amp-hour battery will need to be trickle-charged more often.
For track use, the issues are different. The weight-savings battery-of-choice for track use is the sealed and non-spillable AGM maintenance-free Yuasa YTZ7S.
Yuasa YTZ7S (6 AH, 130 CCA, 4.6 lbs)