It's been forever since I've updated this site because work has been pretty busy.
But, there are some critical life questions I've come across that warrant setting aside life and work to address:
"Is it worth it to always turn on +coin bonus??"
"Is 5>4 bonus worth it??"
So, to answer these questions, I decided to record exactly how many coins I earn on each game using the same Tsum Tsum (level 4 Hawaiian Stitch) with 5>4 & +coin, and +coin only. This way, I can tell how much benefit the +coin and 5>4 bonus provides (of course there are unavoidable variables like how tired I am, Tsum mix visibility, etc.).
To get to the point, the short answer to these most important life questions:
5>4: Not worth it, unless maybe you have some skill lvl 6, since I haven't tested that.
+coin: It depends on how good you are.
For the +coin bonus, ask yourself: How many coins do you earn in a normal game?
If you answered:
1300+: Then, F-yeah, you should spend 500 coins to gamble on doubling or more your earnings. Plus even if you only get a 10% bonus, you're still earning ~1000 coins which is decent. You've got the change to spare.
1000s - 1200s: Questionable. Do you buy a lottery ticket everyday even though you're in the low-middle income bracket? Then sure, why don't you get +coin instead of that lottery ticket. I'm sure you'll break even eventually, which is better than buying a real life lottery ticket, with the same thrill.
Less than 1000: Don't bother. Even if you get 100% bonus, which is rare, you'll lose so much coin on average than if you didn't. Save your coins to get better Tsums instead.
I'll actually post my spreadsheet of game stats soon!