Wife and I love the 3XW FJ, it's a 95 model, we've ridden it to VJMC rallies in QLD, Great Ocean Road and out west NSW, etc., BTW what's good for cleaning off millions of bugs after riding by all those canola crops you've got down there? Those bugs pissed me off, oops, wrong thread. Anyway, it never misses a beat. It's my second FJ, the first was an 88. I'm a bit slack when it comes to maintaining batteries as we like to go away on holidays a couple of times a year for 3 or 4 weeks at a time and I don't bother to leave it on a charger. As well as the FJ (on full reg) I've got 4 bikes on club plates. I'm gradually swapping them all to Motobats. I'll check out the Optimates.
The S600 belongs to a mate, he's a young bloke but he's probably the best bike and car restorer I know (I've been a VJMC concours judge in the past).
The 3XW
and the S600