I agree with the honesty perspective. If you tell a dealer your intentions, it is their decision whether to spend time with you or loan you a demo. If they think it's a worthwhile investment, they'll try it, if they don't, they won't. I'm going to borrow two CD/DVD players from my dealer in a couple of weeks, and unless I don't like either, buy one from him. I'm also going to ask him if I can borrow a processor at the same time which I intend to buy used. It's a reasonable request, as I'll be spending 2-3k for the source, and I want to know which sounds better with the processor I intend to buy. I bet he'll agree. If I were just asking to borrow the processor demo and if I liked it, buy it used, that's less clear if it's reasonable. It would still be his decision though, as I'd be upfront about my intentions.