I ride Sidi Genius shoes and swear up and down by them. Just as the previous post states, they do fit like leather moccassins and are oohhhh so comfortable.
Sidi also makes a low-end road show that goes for about $120. I've seen those shoes on sale for around $95-100 all the time. Keep this in mind, most bike shops price match.
The downside of spending less money on a road shoe is that you sacrifice alot. Low-end shoes flex more. Alot of the power that transfers from you leg through to the pedal is lost with a shoe that flexes, so stiffer is better. Also, the stitching isnt as nice, and they might sport shoe laces rather than a strap/buckle system.
One last note, all road shoes are not the same. Different manufacturers cut their shoes differently. Nike's are fairly narrow and the insole is very flat. While Shimano on the other hand is wide. What I would recommend is try on more than one shoe. You will notice differences between brands right away.