what's the best kind of running shoe to buy?

You should wear cushioned shoes if you are a runner who needs maximum midsole cushioning and minimum medial (arch-side) support. These shoes are best suited for biomechanically efficient runners (you don't overpronate), and midfoot or forefoot strikers. Runners who do best in cushioned shoes often have moderate to high arches.

The Response Cushion 16 from Adidas features a breathable woven mesh upper with reflective synthetic trims. adiPRENE Plus in the forefoot maintains propulsion and efficiency. Torsion System provides adaptive midfoot support. Compression-molded EVA midsole for lightweight cushioning. adiPRENE under the heel for superior cushioning at impact. adiWEAR outsole offers the ultimate in high-wear durability.

The Brooks® Glycerin® 6 men's cushioned running shoe will elevate your running experience and is perfect for neutral runners and mild over-pronators. It features two layers of MoGo stacked in the heel and e-fusion sandwiched in between for cushioning and resiliency. The HydroFlow® in the heel and forefoot delivers a comfortable ride.

Plush comfort meets hip styling in the Brooks® Infiniti men's cushioned running shoe. It's constructed using stacked MoGo in the forefoot for a cushy toe-off and just the right amount of guided stability to curtail mild over-pronation.

This is a very alternative answer to your question, but if you are open to trying a modern alternative, www.vibramfivefingers.com/">http://www.vibramfivefingers.com/ are amazing. Many marathon runners swear by the benefits of 'barefoot' running - increased calf, foot, and toe strength, improved times, less injuries, and more. See http://barefootrunner.org/faq.htm for a list of the benefits. It is a calve workout like no other, even if you only do it once per week.

I'd go for the Keen Newport shoes personally - great for running and also waterproof / very comfortable. Try: webtogs at www.webtogs.co.uk/Keen">http://www.webtogs.co.uk/Keen