Hi Shamane_h,

welcome, you are entering a nice and fun journey with chess computers!
I agree Lipo's advice is a good one (Polgar/Milano, Ed Schroeder).
Varying technology or programming is an interesting approach; like Robert I would also suggest a Novag (for Kittinger's program), a Fidelity Electronics (for Spracklen's) and at least one Kaplan (either Scisys, Saitek, Tandy...). But be patient to find nice opportunities and take time to discover them one at a time, the pleasure will last more! You own enough Saitek Morsch's for now. Also, try to select your future devices across technologies (CPUs, push-sensitive or auto-sensory, plastic or wood, different form factors..) as it is part of the discovery.

Cheers,
Tibono