sasha and dfuse.
In reference to sasha's tracks. I know he uses big blue, the novation series synths for xpander. In a few interviews I've read about him, and also theres a website that discusses producers and their gear, he talks about the way his production goes. Also being a good fan of james holden, its my understanding that they way they correspond on tracks is James lays down a bassline, and sascha whips out a lead, and they let the sound engineers worry about coming up with the dope kicks and ambience to the track, and they sequence, arrange and play it all out themselves.
As far as D:Fuse, being from his hometown, and having worked with him in the past, I can honestly say dustin is a pretty good guy, he is very talented. He plays piano quite well and is very good at writing music. His sound engineer is a super intelligent guy who has also done a lot for the ministry of sound. I'll have to find his card, but he has his website listed on his card, and it goes into some detail about his engineering process and his inspiration. But it takes talent to be able to get to that level that you can have engineers lay stuff down for you. Look at timo maas and fatboy slim, they all have sound engineers that work all their gear for them. I forgot where I was going with this...but uhm..yah... i'll post the website for his engineer and the website that talks about producers and their gear when i get home from work tonight.