I would definitely avoid anything cloupor unless there's a good amount of positive reviews after 6 months, the norm with new cloupor mods is usually a large amount will fail, and when the complaints get to a certain point they seem to drop support and start talking about their next release. Never used or read anything Kamry before.
I'd go for the IPV D2 out of the above, small and sexy with reliable guts. I'd also be confident i'm getting a good quality device if its by Sigelei. Other low cost temp control mods to consider are the IPV4/3Li and Joyetech Evic-VT. The Heatvape Invader Mini also seems to get solid reviews.