Semi-auto rifles is a pretty wide description, anything from a Ruger 10/22 to a Browning BAR in .338 Winchester Magnum.
I just bought a SIG Tread. My post is: I took the plunge – owner of a new SIG M400 Tread | SIG Talk
In the AR category, I also have an economy Del-Ton, which works well, and have had various other makes including Colt, Bushmaster, Moriarti, component built using Anderson parts, etc. The only AR I ever had issues with was a Carbon-15 from Bushmaster. The receiver wasn't made strong enough to stand up to a steady diet of 5.56 mm. I've also owned Mini-14s, in 5.56 mm and .300 BLK. They are rugged, reliable carbines, but their accuracy is less than what can be obtained in a similarly priced AR variant.
I just bought a SIG Tread. My post is: I took the plunge – owner of a new SIG M400 Tread | SIG Talk
In the AR category, I also have an economy Del-Ton, which works well, and have had various other makes including Colt, Bushmaster, Moriarti, component built using Anderson parts, etc. The only AR I ever had issues with was a Carbon-15 from Bushmaster. The receiver wasn't made strong enough to stand up to a steady diet of 5.56 mm. I've also owned Mini-14s, in 5.56 mm and .300 BLK. They are rugged, reliable carbines, but their accuracy is less than what can be obtained in a similarly priced AR variant.