Nothing will ever be error-free, I'm afraid. But seeing how this forum is full of posts of people with problems with their Razer stuff, I thought it might be nice to let you guys know there are also a lot of people out there who have bought a lot of Razer items which all work fine, if not great.
one of those people is me, here's a list of the stuff I have, when I bought them, and how good they (still) are;
dec-2007: Deathadder; best mouse ever, period.
feb-2008: Lycosa + eXactmat; keyboard is flawless, except maybe that the mic+headphone jacks have noise, and certain key combinations can't be pressed at the same time. the mousepad is starting to show siginificant wear on the Speed side, I can definitely feel the difference on the used parts and the unused parts on the edges. switched to Control a few weeks ago :-)
mar-2008: Piranha; flawless, I've taken it to a lot of LAN parties and so far it's done a great job of withstanding the abuse it must suffer in the back of the car due to my reckless driving skills

(same goes for the rest of my Razer stuff, those guys sure know how to build sturdy gear)
jun-2008: Diamondback3G + Goliathus OC; my brother is using these and he's very happy with it. In my opinion though, I think the Goliathus has a terrible lift-off distance with the 3G IR sensor.
He'll probably buy a Carcharias soon because we're both tired of passing the Piranha all the time :-/
sorry for (off-topic) bragging, remember I just wanted to point out that there are satisfied Razer customers who spent their hard-earned money on quality products.