In reply to Scarab9:
I've got fairly wide feet and was a really heavy runner when i started and used Inov's with the max cushioning i could get (4 arrows).
http://www.inov-8.com/New/Global/product-select.asp?F=%25&G=%25&T=3...
as i've got a bit fitter i have tried to reduce the cushioning a little (2/3 arrows).
I prefer the fit of Inov8 shoes and as there's so many in their range you should be able to get a good fit.
Shop around an you can probably get older models at half retail prices.