Obviously the sales guy is ex MacDonalds and wanted you to supersize - must have left MacD's coz they don't do that anymore - I mean it couldn't have been the commission he was after - could it.?
Everyone dislikes something about everything - I prefer shaft -some like chains -some belts - a friend said belts are ok in the US but in the Uk weve got chippings that have a nasty habit of breaking the "rubber band"
The main thing is you buy what you want - and then if it all goes hideously wrong you can spend the rest of your life blaming yourself - far more satisfying -for everybody else that is.
Good luck and take care.
Ade