My son has two ridgelines, a 28 nosler and 300 rum. I dialed both of them with handloads, no trouble making the accuracy guarantee. I've been impressed enough to buy myself a ridgeline in 6.5 prc.
Swaros, Maven, Meopta would be my order to my eyes. They're all nice glass. Comes down to what you want to spend, hard to beat the Maven for the money especially if you get their military discount.
I have 15x56 Swaros, had Meoptas before that. At this point I use 15s more than my spotter by far. Have looked through the Maven 15s they are very nice.
Check out Robby's comparison review of the 15s against the Swaros. I think the 18s are a bit too much on the power. Need to spend some time looking through both.
Lookin to trade my like new 12x42 NL Pures for 10x42 NL Pures in the same shape. Mine are like new manufactured in 20, have all that came with them in the box. Prefer a face to face trade in Colorado, I live in the Denver area.
My son has the Ridgeline in 28, it flat shoots and is very nice rifle. I have two 28s, a Browning Hells Canyon Speed that shoots extremely well and just bought a Fierce Carbon Fury ( haven't shot it yet, very nice rifle).