Just thought i would add my 2 cents worth.
With the amount of mod chips out there any purchase is made through personal choice, yeah we can all say this is the best chip, but some people always have problems with modchips, when other peoples are working great.
I've just bought an XBOX, and was going to go with the executer v2.2, but i chose to pre-order the xbit as i personally liked the idea of being able to flash the chip via usb, as well as the fact it has two methods of being installed, im gonna try the no solder to start with, if it works well i will leave it, but if not i will solder it. The 2mb flash is useful and to be honest it only makes a difference if you are gonna use, but with the release of the 1mb bios i would sooner have a 2mb flashable bios so as not to limit myself if larger bioses are released.
In my ps2 i have a Neo 4.1, which when i bought it was the most advanced mod chip there was, and it wasnt easy to install, but its still going strong and every game i have got with it works flawlessly, if i was to get a modchip for the ps2 now i would go for the DMS 3, as i personally like the features that it has got.
Thats it.