I do second the Optimas (remember you ahev to ask for the REVERSE polarity one, or you are stuck, as cabling is the Maser is the other way around). To change the battery you need to fiddle a bit (remove the trunk carpet, side-cover and off goes the crap FIAMM which comes as default).
Remember to (1) turn your alarm OFF (as you can open the trunk with the alarm on, so it's easy to forget) (2) lower your door windows about an inch, (3) cut-off power using the dedicated knob, (4) UNEARTH FROM CHASSIS FIRST, negative follows, then positive terminal (so you work left to right, or back to front), (5) Presto!
BTW if anyone happens to get stranded at night (battery low, needing a boost) NEVER-EVER do it WITH THE LIGHTS ON. There is a system design screw-up somewhere which means that charging in that situation (hey, you're at night, pitch-dark) closes a circuit which has the F1 pump linked to it, and it gets fried. If you jump-start the car, well, you know you have to cut the power feed or else... but trickle chargers don't need that, so if you try to power-up with the gadget connected + lights on, the F1 pump goes toast quite fast (the relay says bye-bye).
You've been warned.
Ed
Ed