Each shoe company has a sort of "gimick" that makes theirs unique from others. Asics had GEL, Nike had AIR and SHOX, Reebok has DMX systems Saucony had the GRID system etc. Each shoe has benefits and drawbacks as well as other features such as foam that prevents pronation and supernation. Find a shoe that has the features that best fit your needs, there is no such thing as the "ultimate" shoe.
Best bet is to go somewhere like a running room and get properly fitted.
Personally I find the Asics Gel Nimbus is the best running shoe for me. I find that the Gel provides the needed cushioning for my bigger size while being slightly more durable and long lasting than the Nike Air system. Also it has a wider toe box and narrower heel which accomadates my foot shape best. I also find that the shallower arches in there fit my feel better than other shoes. I have a pretty good step, so a decent torsion box in the arch is all I really need for support. I find features like Duomax foam in the Kayano are actually detrimental to my step because ot over corrects my foot for pronation and pushes my foot out making me supernate.
Like I said all have their gimmicks, pros and cons. Be open to any model, try on a million pairs of shoes, and most of all get properly fitted.
jordanturbo is like herpes... Always coming back for more