I'm sure the quality of the Bulova is very high and it's a great looking watch. I will say based on experience, the Hysek rep is very well made, a very complex construction for both case and strap, and pretty unique with the big date and bezel lock. The Hysek has a very smooth big date A7750 vs. the quartz movement of the Marine star.
Plus I think the Hysek could eat the Bulova for breakfast and still have room for a Sub!
Bottom line, the Hysek is a great rep and well worth the $$.