If I´m not wrong,there are three Sumburn remixes (at the end of Random 1-8):two of them were done by Timo Maas (Sunstroke Remix &Breakz Again Remix)and the third was done by Steven McCreery.
You are right.The last remixes Muse have released as b sides are rather crap.You can even find better ones in Muselive.What happened to the good old songs like Con-Science,Spiral Static....?
And my favourite is the remix of Muscle Museum (Soulwax).It isn´t here,though.