www.matchgrademachine.com gets my vote as the best of the current lot. I've had several of their barrels and have been extremely pleased with each. The average turnaround from MGM has been right at 4 weeks for me. Also, they have a list of existing inventory items for which there is no waiting.
I love Bullberry quality as well but don't have the patience to deal with their customer service, though Fred's daughter has been working hard to right the ship. My BB barrels have been purchased as used items.
SSK's quality is still good -- not quite what it was during the company's heyday -- and their turnaround fairly fast as well.
As to Eabco, I know that Eben claimed to gear up to produce his own barrels a while back, but take a close look as the "Encore Accuracy barrels" and you'll see that it has TC Custom Shop written all over it -- not literally, of course.
And the TC "Custom Shop" is anything but custom. It is merely an extension of factory offerings with a few more calibers, finish and lengths offered. You CANNOT specify how you want a barrel chambered and have no say-so as to leade (you're actually lucky if you get one!), etc.
Yes, you can get some terrific shooters from there as well as with standard factory offerings, but the rate of returns at the present could be the reason the factory is running behind.
In the past few months alone, I am aware of ringed chambers, oversized chambers, unfinished chambers, a barrel with a tight spot (took a couple returns to get this one right), non-concentric crowns and a host of chambers which were not correctly aligned with the axis of the bore.