Ok, I have literally spent days painstakingly comparing entry-level DSLRs (Canon XS, XSi; Nikon d3000, d5000; Pentax k-x) and have even made my own excel spread sheet grading each of the technical pros and cons. Obviously, I finally chose the a330, so I will write this review from the perspective of the reason why i chose this camera and why I've immensely enjoyed it.
Picture Quality
- Since you are looking for an entry level DSLR, the picture quality for all entry levels is comparable (in my opinion). Since I am a manual mode shooter, the quality of my shots are really based on settings (aperture, shutter speed, ISO, light, etc) so you'll be able to get good quality out of all of them.
-I would rate the a330 as a bit more exceptional, because in the manual mode, Sony has something called "Creative Style" where you can further tweak your shot (vivid color, night shot, sunset etc....and for each one of those modes, you can further alter saturation, sharpness and contrast). See some of my pictures in my profile!
Lenses
-This was one of the first reasons why the Sony alpha series made my short list - any Sony or Minolta lens will work with this camera. In addition, because the image stabilization is built into the camera and not the lens, the cost is more reasonable compared to other lenses. Therefore, any lens I find on eBay I can use (don't have to worry if a particular Sony lens or older Minolta lens will work, so my options are endless).
Speed
- Although the continuously shooting isn't the fastest in its class, it's definitely usable. When I first was looking at FPS, I thought this was something that was high on my feature list, but turns out (unless you are a sporting-event photographer) when you shot something relativity still, you end up with tons of pictures, where you'll end up just deleting most of them. So the 2.5-3 fps is still faster then i will need.
- As noted by other reviewers, the AF is blazing fast (with 9 AF points), and the switching between Live View and the optical view finder is very fast as well!
Battery
- The battery power is pretty decent, especially since I don't shot with the flash. But here's my work-around: I just use a vertical battery grip, that add three batteries total to use seamlessly ([...]). This grip makes your camera look like the big 2k-5k cameras, and give you 3Xs the battery power.
A230 vs A330
- As those who have researched this well, the a230 is exactly the same camera as the a330, but it doesn't have the live view and tilting LCD. I thought, I'm definitely getting the a230, because the viewfinder is better, and the price is way cheaper. But I found that I love shooting with the Live view, because in manual mode, the live view gives me an estimate of how aperture, focus, shutter speed and iso would effect my shot vs with the viewfinder in the a230, where it doesn't show me any of that(in the viewfinder-only case, I'm stuck waiting unto the preview shows, so I would have to check every shot and then adjust, etc). So the Live view saves me time and space on my SC card and I get pictures right the first or second time, versus the 4th or 5th time!
I could write all about my experience with the Nikon a3000 and a5000, and Canon XS and XSi but I'll just say after testing all of them I like the Sony better
p.s. I realize Nikon and Canon are more prevalent in the market of DSLRs, which is why I wanted to give Sony a real chance - FYI I have a Canon HD video camera, which I love WAY better than any of the Sony models, so for video, I would definitely go with a Canon.