First Gas or Electric? Mine is electric.
Second if you do not currently have a smooth top stove, actually ceramic, you need to know that flat bottoms on all of your pots and pans are required. Any grooves, ridges etc really makes the stove top work harder to keep the heat on the pots/pans. plus there is a real danger of scratching the ceramic top.
Definitely go with the convection. It is great. The best I found for my money is the Whirlpool gallery series, it is about two steps below professional grade, cooks like a dream plus it has a bottom warming drawer, a stove top pot/pan warming spot and a bridge element for using a griddle.

I can't speak for the quality of the gas model though, although I would rather cook with gas any day.

[This message has been edited by Bearmon (edited 22 February 2006).]