What time is it? Watches and horology

Seiko fans a quick question:
Looking at a SKX009 (pepsi dial diver watch)
Comes in 1 of 2 movements J or K
am i right in thinking J is in house and K is made outside of Japan?
Any reason to chose one over the other?

Ive found them on a website for similar money (J1 £134 with rubber strap, K2 £131 with a metal bracelet)

I'm thinking about doing a similar thing. From looking more closely and reading around I think the steel bracelet looks a bit cheap. Lots of people recommend the oyster on (just search eaby/google). J vs K may affect the resale value... but on a £150 watch what sort of margin are you really talking about?

The thing that always puts me off about the 007/009 is the cheap looking dial. My plan is to try and have one replaced with one of the Yobokeis ones. Ideally I'd like blue to match the besle, but can't seem to find one. These were the sort of numbers/face that I was thinking of: