Mantis - almost always slightly better value for money ($/hp) and doesn't use a power module - so doesn't waste space!!!
I'll probably buy a second one next year - when I run out of space in my current racks
I use a guitar stand for each of my DIY 9u/104hp and they are reasonably stable - the Mantis would be more so - if you want portability this may be a good solution instead of the bracket
"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia
Utility modules are the dull polish that makes the shiny modules actually shine!!!
sound sources < sound modifiers < modulation sources < utilities