I got the a300 with the twin zoom lens kit 18-70mm & 55-200mm.
Not taken any shots during the day yet... but:
I feel it improves on the already fantastic a100. Live View works great, really great! I find myself switching between the OVF and LV now, it really does help to make that first shot count! I found the flash to be better on exposure as well.
It feels like it has been built very well and it looks great too. Grip is comfortable and the overall feel is better than the a100. Quieter/Faster/More accurate AF!
It has a pop up flash! it's GREAT to have a flash you don't have to manually lift anymore! :lol
Image quality (being the same sensor as the a100) is exactly what you would expect, but, I'm not sure if Sony has worked some more magic on the sensor? the images just feel different to the a100... not sure if its a dynamic range thing or just me!.
Love the Smart Teleconverter which basically auto crops the image down to get you in closer to the subject on the LV Screen. Changing the White balance and various other options is great in LV and I find that what you see on screen is exactly what you get when you press the shutter (Takes me back to my fun cybershot days!)
Heard some people complain about the OVF being Dim... honestly I can't see the same problem!
Could go on for hours, but for me, its a worthwhile upgrade from the a100 in every respect.
Couple of things I would have changed though: LV screen sticks out a little too much and can impede your OVF use, I also think ISO 3200 might be over-kill for the sensor!
Couple of quick samples with +3 sharpening on cam (perhaps too much!), Nothing technical here! just the first few Jpeg's I fired off.
55-200mm

100%crop

55-200mm

100% crop

18-70mm

100% crop



