This was a test last night (07/08/10) shooting the early Perseid meteorites with a Canon 7D and 10-22mm lens iso 1600 f3.5. 30 second exposures on continuous drive with NR functions turned off.
Too much light pollution at this location but it helped me sort out the technique for the main event during the early hours of Thursday/Friday 12/13 of August
more information can be seen here
[link]
Never found my 5D too good for noise..
Obviously at iso 100-200 there is very little between them but at high iso the MkII is performing better which is one reason why I bought it.