Though we own several Macs, I had a need to get OSX Snow Leopard running on a HP Pavilion DV7 4025 (i5)
After several days trying it, now it is working really nice on it (typing this msg from it on wifi!) and only sound is missing now.
This HP is a powerful laptop and quite cheap for a I5 processor (just 580 euros) and its a powerful computer to run Mac OSX, Win7 and Ubuntu on it
I may comment here how I installed OSX on it in case someone else is interested about it