My nephew has CZ. I've heard nothing but good things about them. But the AR is filling a little different slot for me. More of a handy defensive carbine and plinker than a bench rest, last degree of accuracy.
After shooting a few different guns, and looking at a lot, I ordered a Colt LE 6940.
I really liked the 6920s I shot, but the fold down front sight on the 6940 would allow mounting a scope or maybe an Aimpoint sight at lower profile.
The 6940 is under 7 lbs. Weight and general handiness was a factor. I already have an M1A wheelbarrow gun. I found the AR ergonomically O.K. for me. It seems to point naturally and maintain a fairly steady point. My M1A is a bit "muzzle nervous' and likes to a firm rest.
I went with the .223 rather than an AR10, although I like the .308, and it has 2X the muzzle energy. My wife and daughter will also be shooting it. They are small framed and recoil averse. Also, .308 availability has been spotty. I used to get Fed 168 BTHP, and Black Hills for $15-17 per box. Now it's $25-27 unless you order online, and I can't even find Black Hills anymore. So 30 rounds of .223 (10.47 for Federal/ American Eagle) for less than half the price of 20 rounds of .308 is a factor.
The Colt 6920s I tried out grouped nicely with iron sights, and a cool barrel. By "nicely" I mean under 1 in. @ 75 yds, 5 shots. At 100 yards and more, my eyes need a scope. The ARs I've seen other people shoot, RRAs, and owner built-up jobs seem to all shoot decent groups. Will an AR carbine keep up with a top tier bolt gun with 6-10" more barrel?, No, I'm sure they would not. But on the other hand, you'd get tennis elbow trying to replicate the AR's firepower with a bolt gun. I agree the stock triggers aren't great but not sure I'd want a 2 lb. trigger on a defense type gun. The Geissele trigger is an option.
Of the more expensive stuff out there, I thought hard about an LMT. The interchangeable bbl concept had me thinking. But they fetch a real premium. And to take advantage of the interchangeable bbl. you'd need to buy extra bbls. Then you're talking a real load of $$. Enough to buy two Colts.
So, getting the LE 6940. If it turns out to be a keeper, I'll post a follow up.