Google Android device: Sony Ericsson XPERIA X10 and XPERIA X10 mini

I played around with both XPERIA X10 and XPERIA X10 mini in Sony Ericsson showroom. Both are great just to the fact that:

1. XPERIA X10 mini beats the 4" XPERIA X10 in terms of usability by introducing the One Hand Touch operation. It's extremely easy to use with just one hand. This is non-sense for XPERIA X10 not to include this feature in the coming firmware upgrade.
2. I don't know why, the XPERIA X10 mini is faster than XPERIA X10. I have no experience of lagging in the operation of mini, unfortunately, quite frequent in XPERIA X10 especially switching between applications and photograph mode.

Finally, my friend bought XPERIA X10 mini and I tried it for another day. If Sony Ericsson managed to integrate the speed and the good usability experience from XPERIA X10 mini into the bigger XPERIA X10, the XPERIA X10 is a must choice.

(Of course, with the arrival of Android 2.1/2.2 as well, probably with a bit smaller size - 3.2" to 4")

Seems like an Android phone is definitely my next target replacing my aging frequent break down Nokia N82.  Developing Android application is fun too, will talk about this later.

Charles