My 2 cents worth,
I shopped around when I bought my Tambo and the lack of knowledge from the 'people' I talked with over the phone was amazing. Long story short - I stuck with AAMI, with whom I have business, home and just about everything with, even though it took me 3 phone calls before I cracked it and demanded to talk with someone with some experience. Moral of the story, talk with those who know what their product is, unfortunately some (many) of those you contact initially will not have a full product knowledge.
mark