Questions from a Potential Customer

1) You pick all the components in the config, so you tell us?  There are only OEM parts if you specifically select them, like an Asetek cooler. Actually that may be the only OEM part option they even have, everything else is retail. You even get any unused parts or accessories that come with any of said retail components.
2) Along with all other unused accessories that come with the components, yes you get the driver install discs. You also get the Windows install CD.
3) Zero bloat ware.
4) They use the most current Nvidia or ATI video driver, but other than that just original drivers.
5) OS is loaded on whatever you select for the primary drive. So if you select an SSD for the primary drive, then yes. If you have any weird HDD/SSD configuration needs just ask for it in the comments section when you order.
6) Maybe, couldn't hurt to ask? Though I don't personally really see the point in wasting their time doing various random benchmarks when you could just do them yourself once you get it.
7) You don't have to ship the whole PC back if something needs to be replaced, if you're comfortable doing it yourself they can just ship the replacement part to you. You can also bring it to a local PC repair place (or have them come to you) to have them install the part if needed, but I don't think DS will reimburse the local repair shop charges. Still much much easier and cheaper than shipping a whole PC, and does not void the warranty. This is exactly the same process you'd have with a bigger OEM for their "platinum" repair warranty, except instead of paying $300 up front to the OEM for the extended repair warranty you just pay $30 to the local repair shop instead (or install it yourself for free). Why people buy those sucker warranties is beyond me, you pay $300+ for almost nothing and you will have the most frustrating headache inducing battle with outsourced non-English speaking phone support people trying to get them to even honor said warranty in the first place. That's always one of the biggest selling points of DS, getting to deal with them directly on the phone should any issue ever arise, and yes they will gladly stay with you on the phone to help walk you through component replacements and stuff if you need, I always see plenty of happy customers thanking DS for stuff like that on the forum.

How long are you confortable waiting to order your PC? If you need a good many cored CPU for such things, the new beefy X79 platform is going to be coming out pretty soon with new high end 6+ core Sandy Bridge CPUs and quad channel memory. Due out later this year, I believe? If you can't wait then the only option would be the old and slower X58 platform and try to squeeze what you could out of a 990X CPU. If you would rather get something now instead of waiting then go ahead and start a thread in the configuration section of the forum with your budget and all that and we'll give you a hand with getting together a configuration.