i guess it depends on what sort of riding you're doing.... for me, proper long xc rides are way better on my retro kona, a modern long forked HT simply don't cut it on the climbs but that said...
i LOVE my modern dmr trailstar, it's the best bike i've ever owned, modern, retro or whatever. this is because it's perfect for tooling about on, i can do a bit of everything, it'll go up ok, feels planted and in control on the downhills and i can easily alter the set up in a matter of 1/2 hour for jump/street...versatility is what its all about, i guess you could say compromise and it is but if i were allowed only one bike, then it would be the trailstar. i can swap forks, put gears on, ride it singlespeed with just a back brake, whatever
2015 Kona Precept 27.5... Currently Retro-less