I am using 5xx series gear (562v, 518, 565) and haven't ever felt there was anything lacking in not having some of the newer formats. Be forewarned that the 5xx gear requires some patience to setup but it's worth the effort. When all levels and delay are done properly, the end result is a very natural and open sound. . . it doesn't sound like "special effect," but just right. As far as prices go, the 565 can be had below $1k, but be careful to make sure you get one with the latest software. This required the installation of a new processor chip.
The 568 has also come way down in price now that there's a fair amount of G-series product in the secondary market. With balanced outputs and the ability to do setup using Meridian's windows-based software, it's a more flexible and easy to install unit.
The 568 has also come way down in price now that there's a fair amount of G-series product in the secondary market. With balanced outputs and the ability to do setup using Meridian's windows-based software, it's a more flexible and easy to install unit.