Well, my package did arrive on Monday.
Promptly filled them up.
First, let me say I like them. They seem well made. However, I have a couple of comments.
1) Be careful what juices you use. I tried Cherry Blossom, a notorious tank cracker, and sure enough, 3-4 hours after filling it, the tank completely cracked and spilled. However, I have been using my DIY Cinnamon / Menthol mix since Monday without problems. This mix also worked well in the CE2's. The Cinnamon is from TFA so other cinnamon may damage the tanks.
2) I also found them airy, and although I thought it was cheesy, ended up breaking off toothpicks in 2 of the holes. I apologize to those advocating this method, it works very well.
3) I have one that gurgled a lot, and produced little vapor. Nothing seemed to help. Finally as I was switching the heads with the one that cracked, I noticed the juice was slowly leaking out of the drip tip while holding it upside down. It was less than half filled. So, my conclusion, the seal between the drip tip and the tank is not good allowing juice / air to pass through.
4) I have to adjust my routine a bit. I like to switch flavors, and have already dumped 2 tanks because I wasn't paying attention to what I was doing while unscrewing them. So I was holding the tank to unscrew it, and ended up with the tank in one hand, and the head / battery in the other, and the juice in my lap or on the desktop. Just saying, I will now be way more careful.
I know everyone is different. I never had luck with the Nano's and the 10 of those I bought lasted about a week. The CE3's were "ok" to me, but a pain to fill, not enough capacity, and inconsistent vape. However, they make awesome drip taste testers! The CE2's I thought were good, and what I was using exclusively until the T3's.
So, in conclusion, I think these are a winner. I am happy with them, and they will be my main vaping device with the X2's going forward. I like the capacity, the quality, and the look. Seems like SI once again has given us a quality product.
Mark