i've had mine for about 2 months now, rock stable and no hiccups. overclocks well and with ease, using ballistix tracers (older, double sided ones) in mine with no issues.
any decent brand ram should be good enough, i haven't read anything bad other than avoid current crucial ballistix since they are now single sided sticks now. i would go with g.skill instead.
the DK P35 ships with bios support of 45nm cpus out the box so no need to flash or use a older cpu to POST.
i will push my e2160 further after i get watercooling, hopefully before the start of summer.