I got the 16's with my MVP and I like them but don't love them. If I invert them accidentally, I get a mouth full of juice next hit. Also the 1.6 capacity is to small with the way these coils burn up juice (the 30 would solve that). Over all I do like the warm full vape.
A very similar vape is a genuine Knager T2. If you like the iclear you will probably really like the T2. The best thing about the T2 is that you have to sit there and shake it upside down to get it to flood and even then you usually only get some popping and cracking until it settles down. Almost never a mouth full. It holds 2.6 ml. of juice.
FT has some knock off T2's but I haven't tried any of them yet. I am satisfied with the $4.95 price for the real thing here stateside.
We need a top feeder that is pluid friendly so we can vape all the fun flavors. The glass smoke vivi doesn't really deliver a warm enough vape for my taste.
I'm having pretty much the same experience with the iclear30 as you are with the 16. I had never tried one until I got the one with the Fasttech MVP kit. The 30 is pretty awesome except for the two things you mentioned: goes through juice a lot faster and starts gurgling if I lay it down. I also have to pace myself a little more, I get a little too much nicotine if I chain-vape the thing.