need advice on buying my first seiko(s)

[santiago]

I'm a watch collector (Rolex and Patek) but never Seiko.

I'm visiting Japan and would like to buy a couple Seiko's but find their brand line- up confusing. I know that Grand Seiko is at the top of the pyramid but need advice on others. I'm only interested in mechanical watches and don't understand the wide price spread, almost 5 x between watches.

If I wanted to purchase a few watches, are there a few models you would recommend. Sports vs classic doesn't matter. Thank you