Absolutely fantastic. DS Music were the only people who could actually tell me quickly exactly what I needed without um-ing and ah-ing. I needed to upgrade my version of Sibelius 5 academic to Sibelius 8, and no-one else seemed to have a clue what they were talking about! If I'd listened to Avid's own salespeople I would have ended up spending over £200 (they told me an upgrade wouldn't work because my version of Sibelius was the academic one - this was completely wrong!). DS Music isn't the first music-software-selling shop to turn up on google, but don't let that put you off - they really know what they're talking about and I can't recommend them highly enough.