I have to agree with THP there is a noticeable difference in quality. The bigger question is , is that quailty worth the difference in cost. For my clients that depends but if absentee landowner that knows it is secrie from theft the peace of mind knowing it is always working to feed the fish is priceless.
Bobad you wrote "but if the service is good I guess I'll be happy." I think the best customer service is no need for it, get my point.