I simply use my DAW App's metering. In Nuendo, you can have multiple mixer views. On Top I have all of my physical inputs ordered and labeled however I wish. On bottom I have my playback tracks for mixing. Works fine over here and its peak hold function is nice Totalmix is obviously an option as well - but Nuendo's Mixer is WAY more flexible with regard to hiding tracks, making some tracks "large", and organizing them in any order you wish
FWIW - You don't have to get anywhere near 0dBfs to get good recordings - and it is generally accepted by "those in the know" to record at lower levels. I generally have sustained tracks like distorted guitars riding around -8dBfs, and stuff like Drums will generally peak around -6dBfs - and you could be a lot more conservative than that! Headroom is good - and your Plug-ins and Mix Bus will be a LOT less likely to clip.
MADIface-XT+ARC / 3x HDSP MADI / ADI648
2x SSL Alphalink MADI AX
2x Multiface / 2x Digiface /2x ADI8