The Brand New (or more rather, to be released) Samsung Galaxy II is the leading
android phone in the market, and in alot of aspects better than the iPhone 4,
with is due its successor the iPhone 5 at the WWDC 2011 (see a few posts back)
it features a rumored Dual-Core 1.2 GHZ Processor Android OS 2.3 4 "Hubs" (Social, Readers, Music and Game) a 4.3" SUPER AMOLED Plus Touch screen display, the successor of the SUPER AMOLED used in the Galaxy S and many many more. Another big step against the iPhone 4 is a 8MP camera rather than the 5MP in the iPhone 4. Full Specification Details
Here.