I came across this forum and post looking for some 'gypsy' music names too. I've heard most of that mentioned here, but when you say fast paced rhythym with gypsy on top I was surprised not to see Ed Cox's name mentioned! Mind you he's only been in public eye for couple of years. He plays accordian on top of techno/dnb/breakcore/hardcore, well any of the cores really. His album is called Clowncore. The whole Life4land crew are very heavy electronic and gypsy based style musicians and dj's and I highly recommend!
I've set up a facebook group for music suggestions in relation to gypsy music. The member list is pretty select, spamming your own stuff isn't accepted because we want a diverse range of tunes from a diverse range of bands. Our use of the 'gypsy' label is pretty broad and basically covers anything with a hint of gypsy or folk. Have a listen to the playlists and ask to join the group if you've any good contributions to make!https://www.facebook.com/groups/296951870405019/
I hope to make it to the burning man someday, sounds like my kinda thing. I go to Boomtown, Mischief, Glastonbury, Shambala, Larmer Tree, Sunrise, Greenman, Play, Over the Moon and local folk music festivals to get my fill of music in the UK. Check our Innamorati, DJ Click, Caravan Palace, OMFO, and the record label Ringe Raja Records for more electronic gypsy