Personally, I am not a big shopper. I find a vendor that takes care of me and then stay there (and SI comes through every time). I don't have a lot of time to shop around and with vaping, I have found that it is a preference and you always buy "sight unseen"
I actually like the SI T3's. I don't plug the holes with material but rather, use my finger like a choke and will cover and uncover the holes with my finger during a draw. Some flavors require a longer press while others do not and that way; I am not stuck with the same thing each juice. If I had one complaint, it is that if they leak out, it is a lot of juice leaking but I have only had one do it and it was the head so I simply replaced it.
I don't like the clearos, I have found them impossible to clean out with thicker juices, the draw stinks and you cannot turn them upside down. It can be a deal breaker for me.
I always say though, that everyone should try everything because everyone is different and you experience will definitely vary.