Is the Shorai Powersport battery still the best choice?
SHORAI LFX Lithium-Iron Powersports battery, 36Ah PbEq 12V eq, $329.95 list 4.96 lb.
Geeze, what a porker. My $130 2.02lb Shorai LFX14A4-BS12MSRP has been starting my S52 e36 engine like a champ for three years so far.
I'm careful with it - always keep it nicely charged up. It has served me very well.