I went through the same debate about 4 months back. Actually wound up buying the A65 and using it for about 3 weeks.
I was really happy with the day time shots but was not too happy with the night time shots. Anything over 1600 was not that great. As such decided to get the D7000.
Here are some of the key differences i noticed.
A65 Vs D7000
- A65 has more vibrant colors in the day time shots. The D7000 seems to have a more natural color scheme in its shots. Depends on your personal preference here.
- D7000 had the superior night shots (more natural), compared to the A65.
- A65 has a great Electronic View Finder, which when you change the ISO, Appeture etc, you see the impact on a realtime basis. This is a great feature since basically you have control of the picture that you want to get, before actually taking it. The D7000 on the other hand has an Optical View Finder, and as such any ISO, Shutter Speed Changes does not get reflected prior to taking the shot. Ofcourse you can then play around with the shot later on using the D7000's build in software or professional software like PhotoShop.
- The 2 Dial's on the D7000 to control ISO and Shutter speed is great. A65 has only 1 Dial and need to push another button with the dial to control Appeture.
- D7000 has 2 card slots to the A65's 1, which is usefull if you plan to take a lot of shots in one outing. Also the batter on the D7000 lasts longer than the A65 on a single charge.
- The continuous burst mode on the A65 (10 frames a second) though faster than on the D7000 (at 6 frames a second), can only be controlled using a single mode. This means the camera will decided on the appature, shutter speed and ISO in this mode. On the other hand on the D7000, you could still have the camera on Appeture Priority (A), and using the second button to set the continous bust mode, thus giving you more control. Also the D7000 has the larger buffer and gives you a longer burst of shots compared to the A65.
- You get a lot more control (using the menu system) in the D7000 as opposed to the A65. There are may more options, including in camera photo adjusting, cropping etc.
If you are very serious about doing it professionally then I would consier the D7000.
On the other hand some of the key advantages of the A65 is that, it can be used with older Minolta Lenses, and if you have a lot of older Minolta Lenses, then the A65 is probably a good way to go.
The lenses i used on the 2 cameras are:
A65:
SONY ALPHA 16-50MM F2.8 SSM LENS
SONY ALPHA 70-300 F4.5-5.6 G SSM LENS
D7000:
NIKON DX VR 18-105 F3.5-5.6 AF-S LENS
NIKON AF-S VR 70-300 4.5-5.6G IF-ED
Hope that helps.
Both