I don't have a lot of experience with memory phone ear tips, so what do you guys not like about the CharJens? I have mine and they seem to work well - they're comfortable in my ears and don't start sliding out like the stock silicone tips. I did order the Comply tips since everyone says great things about them, but I'm curious as to what you find lacking in the CharJens.
The problem I have with them is the foam ratio. These memory foam tips are basically hard plastic on the inside surrounded by memory foam. What you want is the hard plastic to as thin and as minimal as possible with a large amount of compressible foam so that you can make it very thin, insert in ear and it expands greatly forming a seal. The amount of compressible foam is very little so you can't really get them that thin to put them in the ear. Even though you can get them to fit in ear once they expand there isn't enough foam to expand to get a nice tight seal.
For the large ones the plastic is too big to get into some ears so even fully compressed they are simply still too big.
Good Foam tips:
Starts out this big: ----- (100%) Compress them to : -- (40%) Expand back to: ----- (100%)
Charjens:
Starts out this big: ----- (100%) Compress them to : ---- (80%) Expand back to: ----- (100%)
You also want them very spongy and the Charjens are more mushy
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