These look fantastic.

My biggest question is which LCD's are most friendly when it comes to mounting these?

I have a Dell 24" Widescreen on my 'main' PC - I have put together my 4 other PC's I will be using today - but I have zero idea on what to use for the monitors.

I was thinking of either vertically mounting two 17" either side of the 24"... if I use the 'dual monitor desk' stand can I still vertically mount or do they have to be side by side?

Would it be cheaper to buy a single desk mount and just sit one screen above one that sits on my desk?

Biggest question is what monitors is everyone using (that uses this Egrotron stands or any other solution.)