For your information, Mad Catz R.A.T mice are the most comfortable thing on the planet. You can adjust it in the best possible way to fit your hand. Any person that got a hold of my R.A.T 7 said it was fitting well. But I have to agree - their build quality is extremely low for the price. Two major points to give here:
1 - The Phillips sensor and solder quality - superbly bad. The mouse sensor falls asleep and fails to wake up unless replugged. It did not happen on my Z77 Extreme6, but it was happening daily on my P67 Pro, as well as my work station... and my girlfriends laptop. Well it is a pesky and picky little rodent.
2 - The thumb rest broke at its anchor point exactly 1 year and 1 month. (1 month post grantee). Had to improvise with industrial glue.
R.A.T mice are double sided edge. When you get your hands on one and adjust it to your liking - it is the best thing out there. You don't want to touch anything else. Specially since it is the widest mouse available (after adjustment) out there, and each person with very wide hands will appreciate it. But yet again, it comes with some many inconveniences that you wonder if the price was worth it. You pay for a premium product, but the build quality is low.
In the end - I will most likely pat and glue and refix this rat until it dies. Nothing else simply fits my hand as well as this and my hand does not hurt anymore after 8-9 hours of 3D modeling or something. But the 90 euro price does demand higher quality. If Mad Catz pays a little attention to quality, I would have no reason not to recommend their products left and right. Superb design - bad execution.
P.S are they trying to steal the "Rapid Fire" form CM?