Oh ok, is there a big different for which works best?
Yes and no. I've only ever used a CFC. I built it. It works "great".
Cons: More work to put together (or more fun..)
Only chills the portion of the wort that passes through. What hasn't gone through is still HOT.
Can't easily know if the inside is clean.
Pros: Chills somewhat more efficiently. If I choke the flow I can cool the batch in about 15 minutes in the summer. Normally in the winter I run it wide open, so maybe 10 minutes.
If I had to do it again I'd build a IC. The ability to see that it's "clean" is a huge bonus for me. The difference in performance is not enough to make it a clear cut winner. Shure you can chill 10 minutes faster, but really, does that 10 minutes make your beer noticeably better tasting? There is the question of how fast do you HAVE to chill your beer? There is no answer. Lots of people chill in 30-45 minutes and make great beer.
I actually thought about *downgrading* to an IC, but then I realized that with my pump I could recirculate the chilled wort back in and chill the whole batch at once. And i also realized that I could sanitize the chiller by recirculating for a while before I start the water flow to the chiller.
At this time I'm thinking about upgrading to a Duda Desiel Plate chiller and selling my CFC. The plate chiller has all the advatages of the CF, but is even more efficient, and can be baked to STERILIZE it between batches if I want to.
Bottom line: Any and all will work well enough. IC is a winner for people looking to save a few $$ and still have a great chiller.