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This was my first SLR after using a compact camera and it provided a very nice transition into greater control over my photos. The 450D is quite an easy camera to get used to as a budding amateur photographer as the user interface is pretty intuitive and most of the functions you need are readily accessible without digging through menus (however, there is plenty of flexibility for the enthusiast should they want to dig deeper into the camera's menu system).

One of the most satisfying parts of the camera is that the focusing system is very good, it certainly provided a step up from a point and shoot. Coupled with a fast lens like my 50mm f1.4 and the high frames per second shooting ability, capturing action shots are a breeze.

One thing to mention about the bundled EF-S 18-55mm kit lens though: I bought my 450D with the kit lens and while it gets the job done, if your budget can stretch that far, I would probably recommend getting just the body and saving up for the much superior EF-S 17-55mm f2.8 IS lens. I found I grew out of the 18-55mm lens quite quickly due to it being not the sharpest of lenses, but as a starter lens it proves to be very good value.

As for downsides, the noise that creeps into photos in 800 ISO and beyond could be better, and the camera isn't fully weatherproof so I tend to be a bit wary when going out in wet and windy conditions.

If you're after a beginner SLR, this is certainly a great choice, with plenty of room to grow with you as you become more confident in exploring more creative shots. If you're after video capability and a little better low light handling, then pay some more for the 500D, but the 450D is certainly still a killer bargain.