Each type of chiller has its pros and cons. Its like rock-paper-scissors...
I've personally owned and operated all three types. What I CAN say from personal experience is that:
1. The 50' 1/2" IC kicked ass...10 gals to pitching in <10 mins and there was never a concern about clogging.
2. The 40 plate chiller I had kicked even more ass (as fast as I could pump the wort using a powerful Little Giant 3-md-hc pump). But I had to be very careful about clogging. I spent a lot of time backflushing and worrying about sanitation, especially because I kept finding hop particles when flushed.
3. The chillus convolutus was just as fast as the plate and clogging was less of an issue. I thought it was the perfect solution...however the inner coil has a helical shape to it with lots of crevices. I had no problem with residual debris, but there was no way to clean it other than the usual chemical means. Better than a plate, but still enough to bother me.
I have recently gone back to a SS IC with custom whirlpool arm (thanks, Bobby!). I haven't used it this way yet, but I wanted to get back to basics. Sanitation is no longer an issue, and neither is filtration. Oxidation of copper/verdigris in the wort is a non-issue with SS, and it is way more durable.
I can do a quick whirlpool and let things settle....most of the trub and cold break will stay out of the fermenter....AND I can free-float my hops for max utilization.
There is no perfect way to chill, only the way that makes you happy. For batch sizes less than 10 gallons, what does a minute or two really mean?