How comparable is an Omega Seamaster 300m to a Rolex Submariner?

[brigadeer]

I have been lurking around these forums for a few years now with my heart set on a used Rolex Submariner. I'm budgeting around $4,500, so I imagine that would get me a watch around 10 years old or so.

I recently came across the Omega Seamaster 300M, and I really like the looks of it (very similar to a Submariner IMHO). I'm curious how others feel in regards to the comparisons between the two.

I still like the Submariner, but I also really like the comparable looks of the Omega Seamaster 300m, and the price would allow me to buy brand new.

Curious what everyone's thoughts are here, which will be greatly appreciated. Thanks!