Motobatt for me, on nearly all of my bikes. Never had an issue - apart from the one on my F650 Funduro where I fitted a brand new battery, then accidentally left the parking lights on for over a week (it was under a cover). When I went to the bike the battery was obviously stone dead. Nevertheless it started with a jump and lasted another 18 months before it died*. My fault entirely, not the battery. I replaced it with another Motobatt.
* its still actually doing service in my garage powering a LED overhead light - only holds 9 volts but is enough for the variable voltage LED.
