You have had the same experiences I have had which ended up turning me off of CCs all together. I do like the flavor profiles for a change but I cant ever get consistancy with them. I am probably more of a CC noob than you though and most of the stuff I found was cheaper brands and vitolas.
Like Justin...I too had some VERY consistent issues w/ smoking ccs early on. My theory anyway....is that I was receiving pretty much every cuban i'd smoke via trade. And while I'm not saying they were fakes, or they were "gray market, or simply discount smokes (which there are many still floating around out there)...I'd have draw issues w/ more than 50% of em'....easily. And the smokes I was buying were "Limited Editions" (Boli Petit Belis, Upmann Mag 48s)...which, as it turns out, I really don't care for those even still. So I'd all but given up, and almost did.
However, once I found a reputable vendor (thanks again Jim :tiphat
...and started sourcing my own boxes....there's only been one box I've had construction issues with (Partagas 898Vs)...admittedly in a small sample size and simply a minor draw issue, no where near the extent of some the unsmokeables i'd had in the past (think 2000-2001 stuff sold as discounts at certain vendors).
I also have had draw issues w/ thinner gauges (PCs) in the past, and since I don't smoke all that much, I'll go for a robusto or larger if i'm smoking these days...but the larger the gauge (at least you'd think), the better luck you'll have of a decent draw.
Buy a box of Monte Petit Edmundos, Trinidad T's, or anything Upmann.....I can't say i've had a single construction issue with any of these. There's more to that list, but those stand out to me. PSD4s for the most part have been excellent as well, save for a little tighter draw or two on some 09 Tubos.
Many here will attest though I'd think, as I've seen it posted several places....Construction for cubans is on the uptick, and has been for the past few years now. Hopefully that will continue, as there's nothing worse than trying to smoke a plugged stick. Eff the poker bizness, life's to short....I'll pitch it and hope the next one's better.