Hey Mr Vandalay, my favourite ROM maker.
To be honest I haven't noticed a marked difference but I shall check now. The main thing for me is that typing is back to iPhone speeds!
Ok first test, over WiFi I'm gonna test out www.smh.com.au
which is a very data heavy site.
Ok I wasn't expecting that....Desire finished loading the page six seconds faster.
Now I'll try engadget.com
Ok well the Desire only won that one marginally but its not as big a page.
I would say there's not much in it, however the difference in screen size IS noticeable; on the other hand the difference in colour quality is insane. The HD2 looks pretty washed out in comparison.
Bear in mind that also I have a number of apps running and Windows open in the Desire, whereas the HD2 was freshly booted. Also my Opera 9.7 doesn't support Flash so I assume the Desire had a little bit more work to Di rendering those Windows too.
I will upload a YouTube video shortly to give you an idea
Opera Mobile 10 is coming to Android very soon anyway so that should be worth a look.