I've used Accumate rather than Ctek on motorbikes, cars, and watercraft for about the last 25 years.
Never had an issue, been more reliable than a couple of Ctek's i've had, and even "recovered" a couple of batteries which other chargers didn't even recognise.
I've used Accumate/Optimate for years (and only recently sold off my collection of 10!).
I've now got a couple of the Maypole 4A smart chargers. Fraction of the price (£23.99 on Amazon), and the SAE style leads are readily available at any length - I have a 7 metre span for charging the MG. I like the LED display so can see exactly what state the battery is in. I've also made up a few SAE/Optimate conversion leads so can continue to use my heated clothing.
The only downside is that if your battery drops below 6V, the 'smart' bit thinks that it is a 6V battery and won't charge it up beyond about 6.5V. It doesn't have the battery recovery facility of an Optimate, but ideally I don't want a battery draining that much anyway.
