You do hear a lot about them, just not on this forum.
CZ makes a solid rifle, and a wide range of them (from a decent .22LR bolt action (now that hardly anyone else makes one) to a .223 sporter, to varmint rifles, tactical rifles, medium bore rifles, and a wide range of African/dangerous game rifles in many calibers.
The 550s have a Mauser-style controlled round feed action. I think most all of the rifles come standard with a single set trigger. The 550s used to sport a very Central European-style hogback stock/schnabel foreend tip and come with sights, although they (or the importer, CZUSA) has been building rifles to 'American' specs over the last 5-10 years (clean barrels, straight comb stocks, etc).
The best gun I never bought was a CZ 550 European in 9.3x62
It was at the tail-end of the American production run and the vendor had sold out. Ended up getting a credit and using it towards an RCBS Rockchucker reloading press instead.