Because I follow the "affordables" forum, I completely missed the news of limited edition monsters. Make note to follow "Seiko and Citizen" forum .
The Baby Tuna SRP453 is way lower priced (around $235 on Amazon) than the SRP455 (around $355). Any reasons why people might seem to favor the 455 over the 453? I'm a little unsure of the "shroud" thing since I'm only familiar with my beloved OM and 007.