Not good at all. I'm probably spoiled having grown up in Best Buy territory (Sound of Music anyone?), but it used to be a very fun place to go. An absolutely incredible depth and breadth of product. You could demo everything they sell. I very well remember their "wall of cassette recorders" and the sales person helping me pick one. About that same time they also had a "wall of VCRs", maybe 15-20 models in all, all hooked to individual small overhead monitor. At one time I could truly be exited about a trip to BB.
In all honesty, apparently emboldened by their defeat of Highland (I think that was their name?), I believe their expansion out of MN ruined them. Over time selection became more and more limited, but also more and more distinctly bottom of the barrel, the help far less helpful (and relevant). Actual functioning displays were replaced by non-functioning, empty chassis, and for a few items the displays were eliminated all together, leaving only the packing box with a picture. Correct me if I'm wrong, but other than their flat screen TV's, can you really check out anything in a Best Buy anymore?
Their prices are certainly not "Best Buy", and I'm not even talking about in comparison to Amazon, Newegg, etc. The prices they charge for accessories (cables, power strips, keyboards, mice, video cards, etc) is positively criminal. And the help? What help? I found it completely laughable their claim that people go shop at BB to learn about an item then buy it on Amazon. In reality, you will learn far more on Amazon in 10 minutes than you ever will in a BB store.
As for customer service, I can't recall a time in the past 5-10 years when I haven't walked out positively angry. Most recently was a few weeks before Christmas when they advertised a great deal on Android Tablet as "in store only". I went to the store as soon as I could only to discover (1) no sales person there knew about the sale (I had to go online using the sales terminal to pull it up for them), (2) there was no display location for the sale product, (3) they did not have the sale item in stock at all, (4) they would not price match the identical model number they did have in stock because cleverly gave the sale item a different SKU, and (5) there was only 1 store in the entire DFW metroplex that had the sale item, and they only had 1 or 2 of it!
In all honesty BB lost all relevancy many years ago, not because of their B&M business model, but because they forgot about the very thing that made them successful in the first place. Product selection that was second to none, and a sales staff that knew what they were selling (and trained to do more than push extended warranties).