It seems like most people just ask for what's best and don't try stuff out for themselves. I made a Magma Driver originally and loved it! But since making a Storm Driver I'm really kicking myself over it.
Because Spiral Knights relies heavily on player skill I think it is very important that people try all different kinds of gear to find what suits them best. I've sadly had to hang up my Winmillion due to it lacking a 5* version even though it was my main weapon through the Preview.
Perhaps it's not that non-standard, non-token gear isn't good, it's just that it's not worth it. You say yourself - "much harder to acquire", as opposed to "most easy to use".
Wouldn't it make sense that when offering general advice for a large audience, the safest generality would pretty much be "get the easy to get thing that's also very easy to use"?