Bpnkrtn,
Now... it's your fault! (in a good way - lol).
Based on your post, it really looks like the Shield RMS or RMSc is currently the best RDS setup for a CZ-75. Are you still pleased after having a chance to shoot it more?? Lower 1/3 BUIS co-witness OK??
I've been shooting my P-01 with the 'temporary' JPoint/Leupold mount setup and absolutely love the way it shoots quickly and accurately. But it required two 'wedgies' to have enough elevation adjustment, making it a bit clumsy. However, it has worked well enough to convince me to go ahead and have it milled.
I found a good deal on a 4moa Shield RMS at GT Distributors gtdist.com for $319 so I jumped in.
With my blurry near vision, the 4moa dot looks like a 6 or 8 moa anyhow.
Will post results in a month or so after milling.
Thanks, Vinny