If you don't have huge client base than Reseller is the best option to start your business. Most of the Reseller try to host with bigger host(who have their own servers) and resell their services to their client and get the profit. When Reseller have appropriate number of client base then he think of more benifit with his own server rather than reselling other services and switch to his own server. If you are not technicaly sound then I suggest you to either go for Managed Servers or stick with your own Reseller Plan, you have good client base.