There are certainly still the arrogant high-end retailers. Fortunately, due to competition I think they are dwindling. I would hope that high-end retailers that understand they need to provide higher service would grow, but they need a decent sized market to make that reality. In otherwords, you're not going to find too many in Omaha, there's just not a big enough market.
Your comment (and echoed by a few) about Best Buy surprises me. I've always found Best Buy to have some of the best trained sales staff out there. Okay--are they the most knowledgeable, probably not, but they are well trained. On every occasion I have been in Best Buy, I have usually been asked if I was finding everything okay or if I had any questions. The sales staff was always polite and never pushy. If I had questions and the person didn't know the answer, he didn't make something up. He would say, I don't know, but let me get "mitch" he'll know the answer to that. I've always felt that high-end retailers could learn a lot by how the sales force operates in Best Buy.
There are high-end retailers that understand the above and do have a great sales staff and excellent customer service. I am hopeful that it's an expanding trend and do think there has been improvement in this area over the last 10 years and for good reason--the competition created by the on line stores.