I know I can control the 580EX2 from my 450D menu's but for price reasons was more interested in the metz 58AF2 or maybe another brand, but can't seem to locate information weather any of those can be controlled from within the camera menu's
Any help is apreciated
To the best of my knowledge the Metz 58 is the only third party flash that offers almost exactly the same functionality as the 580EXII. There are ever so slight differences with a few things that you may or may not like. Go to the Metz web site and have a look at the Canon specific manual for the 58AF-2. Can't speak to your specific camera model so you might want to research that as well.
I came pretty close of buying that one instead of my 580EXII. There are at least two features that I find pretty interesting: it beeps when charged up and it has it's own Metz specific master group which under certain circumstances can offer a few extra options when combined with other flashes (Canon or Metz). What I didn't like that much about was the subjective build quality when directly compared to the Canon. Neither of them is perfect but both seem to be really really good. I'm pretty sure that I'll add a 58 at some point.
I used to use the metz flashes almost exclusively until just out of curiosity, I borrowed the 580 ex II from canon for 2 weeks and ruined me haha. The build quality, while it never screamed weak, comparing the two would be like comparing an L lens to a non L lens. The 24-105 build to the 17-55 build. I never had problems with the metz but it is noticeable. Also because of the extra removable foots (canon/nikon/sony/met/etc) the connectors can get weaker than normal and I found because of that, ETTL connections got very iffy... sometimes it would connect with ETTL quickly, other times it would show TTL but not ETTL... Cant say i've ever personally used the nissin or the yongnuo flashes... They just seemed, from the eye test, lesser flashes even though I'm sure they are fine flash units, it just wasn't for me. But if money is an issue, i recommend the metz for features vs value.