One data point:
Factory Tikka one stage
I bought the Lumley Tikka trigger springs kit. You get three springs, heavier (bit lighter than stock), medium, and light.
On my trigger, the light one was kinda too light (and I like relatively light triggers like 8oz/8oz Bix n Andy two-stagers). In fact, I had a couple negligent discharges into the range berm due to me not being as careful as I should’ve been.
So the light spring was too light for me, even for bench range use. But the Lumley medium was perfect for my stock single stage trigger.
Factory Tikka two stage
To be honest, trying different springs didn’t seem to make that big of a difference in the Super Varmint factory two stage. Seems like the new spring only affected the first stage.
I don’t really like that trigger anyway. It has a thin blade, a too-long first stage (and I like long first stages), and a too-heavy second stage break.
Gen 2 Midas two stage
Haven’t gotten enough trigger time on it yet! But seems promising. I can’t really comment intelligently at this point other than it feels nicer than the the factory Tikka two stage that comes with the Super Varmint, but not as nice as the Bix Tacsport Pro 8/8oz with the gator shoe.
Btw I think the SV two stage is identical to the Tac A1 trigger except it doesn’t have the three position safety. Which is dumb…why not include that?