While most folks have upgraded to Diablo long, long ago, I fell into the trap of actually using the n810 early on. So I had a nice chinook setup and didn't really want to do the Wintel mantra of reinstalling just to get diablo. But now I've been playing with both, with two n810 devices, because its always more fun with two ;)
So one is running the Chinook from about Feb 2008 and the other RX-44_DIABLO_5.2008.43-7. I thought that wifi felt faster on Diablo, so I did a little measuring. Its quite slap happy but does show some considerable difference, using the same DLink DIR-855 AP for both devices.
On the server:
dd if=/dev/zero of=10mb bs=1024 count=10240
On the tablet:
time wget -Y off http://x/10mb
The chinook k/s is quite stable at around 350. On diablo things move around quite a bit in terms of speed. Perhaps this bursty nature works well for browsing making things 'feel' faster too.