I just received my Byrd Robin and Byrd Starling yesterday in the mail. I have to say with the Robin, I am very impressed. The lock up is extremely solid, no play whatsoever. It is very stiff in opening , but I can deal with that because I hate blade play. It's a solid little knife and the fit and finish is outstanding for only $16. Stainless steel liners are well polished, and the knife had great a comfortable grip. I like this knife.
Now on to the Starling: I'm getting rid of this knife immediately. I bought it to take the place of my Ladybug III while I send that away to get replaced/fixed for bladeplay issues. This knife sucks, and is the worst I've bought. The blade is too stiff to open comfortably, and the knife has horrible, horrible blade play. When I look at the knife from the top I can see the space in between the liner and the back-lock when opened and I can watch the blade move from side to side. In addition, when I try to close the knife, it gets stuck on the back tang and doesn't close unless I force it, in which it very dangerously pops forward. The safest way I can close this knife is by depressing the locback and smacking the back of the blade against something to pop it back. The feathering on the handles sucks too, and is very slippery. My Ladybug III, even with the bladeplay, makes this knife look like a paperclip. I very much dislike this knife, and as stated, I'm going to try to lube it up enough to get rid of that sticky lock problem, then give it to my buddy at work that liked my ladybug. If I can't fix that, then I will probably give it to someone I don't like so they can cut their fingers off.
Bottom line: In my opinion, I think the Byrd knives have potential to be every bit as good as other Spydercos, and can also be just as crappy as chinese flea market junk. Yet, I would go ahead and pull the trigger on that robin because I really like this little thing, and don't see the quality decreasing much on it. I think the Starling was just so terrible because it is a smaller, cheaper, and one of the more unpopular knives in the series and probably doesn't gain that much attention from the manufacturers.
Added bonus: I love the size on the Robin as well. Fully handy, and good blade length.