Good Evening All-
The two watches are at two slightly different pricepoints. Snow, to answer your question, the higher initial investment in the Seiko is absolutely worth it.
Every serious collector worth his salt has had a few automatic Seikos in his or her watch stable. They are a solid value for the money and can easily be sold. The same can't be said for Invicta, which are of "OK" quality. If it is a question of appearance, have someone like MKII individualize your new watch. You would be amazed at what a different set of hands and/or an aluminum chapter ring will do.
With all respects to TOB9595, the appearance of wearing a Rolex is not completely desired. Believe it or not, people who are horologically in-the-know would consider you quite savvy for opting for the Seiko models. Rolex is generally is attractive to newbies or for folks who aren't really "into" watches, but have a decent amount of money burning a hole in their pockets. A shameless copy of a Rolex is a few steps down that ladder...
It is ultimately your choice, but the Seiko would immediately kick-start your collection with a proven, well-respected performer. Good luck and let us know how it turns out.
~ Blue Jays ~