My favorite from Allied, and my first somewhat complex kit, would have to be the Knight Kit Star Roamer. My favorite kit of all time is the Dyna Mk III power amplifier. I've built many, many kits, from a couple of Heathkit AR15s I built for friends in college in the '60s, this after they glanced at the instruction manual, to my 500Watt per channel Haffler power amp, many Dyna- and Haffler preamps, etc. My latest kit, and the first in a very long time, is a Ramsey RM100B semi-pro, low-power FM transmitter (highly recommended).