Aheadset is crap.
Theoretically, it can be lighter, but that's only when you're spending £££ on every component to become the ultimate weight weenie.
On a normal bike at a price mere mortals can afford, all you've done is make finely adjusting handlebar height impossible. Well done, you're oh so modern. Shame every slight tweak requires forking out £10 for a new stem.
Bloody stupid things that should never have been allowed to propagate.
I've got an Ahead system on my CX bike and it works perfectly well, but there are no clear advantages in terms of my own cycling needs. Both of my road bikes are on threaded stems; I deliberately kept the threaded fork on the race bike as my previous road frame did
have a threadless fork and left me little room to tinker with handlebar height.
My touring/commuting bike has a cheapo FSA threaded steel headset which, interestingly, has needed no adjustment in almost 3 months of intensive use since I fitted the thing!
"Not so much a religion as a savings club for people who think Star Trek's a documentary"
- Marcus Brigstocke on Scientology