I have a Ferarri Duo V2 clone with an upgraded V3 security module which runs fine on latest original images. No PSU issues, the original fan was a bit loud so I swapped it with a more silent fan. I run a 2.5" 500Gb internal drive and a fixed dish on this reciever though, the PSU's have been known to not handle the additional draw of a 3.5" drive or motorised dishes very well.
In fact the Duo clone is more stable than my 800SE clone in terms of the number of crashes, but thats probably because I experiment more on the 800SE, the Duo is the main viewing box in the house used by family etc. I setup a Ferarri Duo V3 clone a couple of weeks ago that a work colleague purchased direct from China, that is also working fine out of the box with the latest VIX image it was already running the latest v3.2 firmware so no need to upgrade. I think he paid around £160 delivered.