KTM Revelator 3300 frameset. £899.99 RRP (but deals available) for the frame and fork. My 55cm frame was just under 1kg when I weighed it, the fork about 330g. The Aithein is supposed to be a top notch frame performance per £ wise, but given I had the option of both at trade and went for the KTM and don’t regret it, I will recommend it to you.
I may have a frameset for sale too very soon if you’re roughly 55cm proportioned. Email in my profile if interested… Oh and rather than being some unknown quantity, these frames are made for KTM (to their design) by a rather large, some might say Giant if you will, far eastern manufacturer of top quality bicycles and framesets!