Visit to Safeco

I grew up in Tacoma and went to many Kingdome games during my childhood, but I have not spent much time at Safeco. Every time I visit home the Mariners seem to be on the road, but fortunately I will be in town for the 4th and the Ms play on the 5th (albeit against the Royals).

I'm sure this has been discussed somewhere, but I couldn't find it after doing a search. Where do you suggest I get tickets? Bleachers? Upper deck behind home? I'm willing to splurge. Has anyone ever sat in the Diamond Club? Is it worth it? I can get tickets on StubHub for $200 each. Thank you for the help.