Running Shoes

I would like to invest in one of these shoes, so I can start running. But then again maybe I need more than just a pair...

Asics Cushioning - Neutral Pronation:
Gel Solutions - fit ok snuggly on the middle, wider fronts, nothing special (retails $70/$50)
Gel Cumulus VIII (TN637 Granite/Blk/Malibu) $85
Gel Landreth II (TN534 White/Ti/Yellow) $90 - PHF (perfect heel fit), high mileage, IGS

Adidas Cushion:
Cushion 2006 (white/silver) - adiprene $110
Climacool Cyclone $90

Adidas Support:
SC2 $85