im still loving opera mobile, im using 15202 and its great and fast. skyfire is faster at displaying (note that i said displaying rather than loading) pages and plays flash but the navigation is terrible, its like surfing the web with googlemaps cuz the page isnt really loaded, just the part you see on the screen, the constant rendering when panning zoomed in causes the blurriness and the damn checkers that slows you down so much that its hard to stand reading forums with it cuz it renders so slow while you scroll through posts that its down to a crawl IMO and the downloads arent reliable cuz they fail a lot and no multi tabs. Opera is the one i maily use for reading sites like forums, downloading my music etc. etc. and its much safer cuz it renders on your device instead of a server keeping tracks of your data for cache.

my 2 cents

i have both so i can care less which is better i have faith in skyfire but in the meantime, Opera has my vote