Yes, been using it for 18 months I would say and I love it. The wealth of add-ons make it perfect for me.
I use it and sync to my HTC Magic and also an iPod. I also use an add-on called FolderSync that lets me write the MP3s contained in a playlist to a folder with the playlist written as a .m3u to a specified location too. So I have (for example) a "Top Rated Dylan" playlist which is songs by Bob Dylan that I have rated – I can select to have all the specific MP3s in that playlist written to a specified location as well as the playlist. I use that to write it to a little USB stick and play in my car.
Also have MediaFlow add-on to display album art in a 'flow' form and I use the Chromibird feather. There are loads of great add-ons, Last.Fm, lyric lookup etc. Player works nicely, don't think it has crashed for months, doesn't use too much memory, no additional services run (like iTunes).
As you may have guessed I'm a fan :-)