Well, I bought Canon 550D and I am super happy with my 550D. However, if you are new to DSLR and does not want to spend big money on first set of camara body and lens then I guess Sony A33 or A55 is a good place to start with. At least A55 is cheaper yet still carries lots of functions for taking pics.
My investments in camara.
550D W/18-55mm Kit - 28,900 EF 50mm F1.8 - 2,900 EF-S 15-85mm IS USM - 26,000 Sigma 50mm F1.4 EX - 16,300 Tamron B005 - 14,900 EF-S 55-250mm IS - 6,000 EF 85mm USM - 12,800
One great photo of smiles to me from my twin sons - Priceless