I need to bring this thread back to life, sorry, I do, I'm not moving to an expensive roaster yet and I need to share experiences.
I've been using an 850 watt Prima Donald-Duck roaster, in hindsight it's almost perfect.
"In hindsight ?"
I just bought a 1200 watt Hinari, it's way to powerful and way to fast compared to the Prima, the Prima could do with just a few more watts and the Hinari a few less watts with more air-flow.
Looks like I'm going to be fiddling and yes, putting a separate supply onto the fan is a superb idea. I must find that modding thread.
Merry Christmas to you all and thanks for all the help.