Congrats on your Heathkit station(s)
The blue racer I have and enjoy using came from
VE7-land. It was used on the Canadian Pacific. It dates from 1917,
and is original cobalt blue. It is well worn, and I do have to fuss with
it from time to time, but it is still a lot of fun to use.
BUT, favorite? GEE, that is HARD !!!
OK, I'll bite.
My favorite bug to use on the air is a 1936 McElroy.
It is especially smooth operating at relatively slow speeds, the code just sort
of rolls off of it. It is just the right amount of hound-dog ugly to be
very masculine, and one has got to love the World's Fastest Telegrapher cast
into the bottom.
And yet ... the 1943 Standard Radio bug, maroon, is
another solid and smoot performer, a joy to use.
The 1951 right-angle Simplex Auto from Australia is
excellent at amzingly slow speeds.
The 1910 double lever offers a special challenge since it
is possible to close both dot and dash at the same time, you gotta be "on"
And who can deny the pixie, the 1921 Martin Junior.
Delicate and finicky, yes, but it can really cook.
Flop your hand to the side, relax, and finger the Candain
Bent Dow, what fun!
I give up. They are ALL fun!