Tho I can't say I'm a guru, I think CityChain would be a good enough shop, since a lot of their store are listed as Authorized Distributor of Seiko in Malaysia.
But if you live close to Midvalley or Sunway, there's no harm in checking out Seiko's own shop there.
I personally would go for the King Seiko for its historical value. But I haven't had a chance to see both of them IRL, so..
My guess would be the market they're selling for. I'd guess that SARW-055 is for domestic Japan market and SPB161J1 is for foreign market.
Probably for Seiko to see which market likes the product more? At least, that's gonna be my assumption for now.

I can't decide between SPB045J1 and SPB047J1, I like how thin the hour and minute hands are and they are in my fav shade of blue so I like them but I also want something minimalistic and shows the date in an easy to read format.

also i can't justify the price tag for SPB047J1 since it's so minimalistic that I feel ike it's not worth the price lol. are they even good buys? i rarely see anyone talk about these 2 pieces or the presage line anyway