i personally feel very strongly that eating meals is best. if you're hungry between meals, make them larger. i like three big blood sugar and insulin spikes per day (aka meals!), sometimes two, and i don't want to constantly be digesting, or messing with hormonal levels. i think cutting snacking and sticking to meals is a powerful weightloss tool, as well.
that being said, i'm likely making a bigger deal out of it than i should. if your health and physique are good, i don't think it's a make or break issue.
also, any switch in diet will take some time to get used to. say a few weeks?