Anyone every purchase / use hardware from <http://SiliconMechanics.com>?

Their prices seem to be unbeatable.

So I'm curious to know how reliable their servers are.

**Also, who do you recommend to buy the best bang for your buck on rack servers?**
['https://serverfault.com/questions/31361', 'https://serverfault.com', 'https://serverfault.com/users/-1/']
For the love of the flying spaghetti monster; don't ever pay retail.

We just did a large purchase from Dell for a bunch of servers, an EMC CX4 SAN, switches, load ballancers, etc. With full Microsoft licensing we paid easily 30-40% off the original quotes. It's all about having a good sales rep, and being able to negotiate when them and get them to work the partners for the best possible deals.
I bought 3 servers from them probably 3 years ago. 

2 servers had the (cheap plastic) rabbit ears break off almost immediately. One server was RMA'd. 

In terms of operations and not cheap plastic case addons, they've been reliable machines. I've heard their quality has improved from the models I bought.