The Medusa are the best bang for your buck period.. the v2 2000kv 60mm is perfect for a buggy w/o any heat issues, and they are super effecient almost to neu's levels for 1/2 the price. http://www.medusaproducts.com/Motors/036-V2.htm
I'd buy a Medusa motor, but I really don't have the money. It would be nice, but I don't mind gearing down a bit on a Feigao as I'm not looking for a super fast setup.
Not a bad motor for the price. If you don't want to spend the money for a MedUsa it'll have to work. On 4s-5s geared for ~35 MPH it should do fine IMO, just make sure to get one of Mike's XL-sized heatsink clamps to cool it and keep the endbells together.
All I ever wanted was an honest weeks pay for an honest days work.