This month, four eagerly awaited cameras all hit the market with a big ole thud: Canon's EOS Digital Rebel XSi, Sony's Alpha a350, Nikon's D60 and Olympus' E-420. They are not all evenly matched on paper, as you will see, and they certainly vary in price. But what's different about them, really? They are all aimed at people who wake up one morning and realize their point-and-shoot's pics are pretty crappy, people who don't consider themselves photographers but wouldn't mind spending a little money (under $1,000) to put those high-school photography lessons to practice with a decent body-and-lens kit. I decided to fiddle around with the four hottest new entry-level DSLRs and see what I could see.