I second the seiko 5, I have a seiko myself, (not one you would be interested in) and for the price, they really are great watches. I haven't had any problems with it and you should be fine with 30M. But really you can't go wrong the citizen (a few of my friends have them and like them a lot) or the seiko. It's just your own personal preference
(my seiko)

(my seiko)