http://morebeer.com/products/wort-chiller-superchiller-recirculation.htmlyeav ive also ready about some of the issues with plate chillers holding hop gunk in them, thats why i bought a stainless steel hopspider from stainlessbrewing to put my hops in while boiling. when the boils over i can just pull all of it out and nothings going in my plate chiller:) also in regards to said cleaning issues, since the wart will be boiled when it first hits the plate chiller, anything in it will be eradicated:)
like I said, don't know if it's any better, but it's the tool I wanted to try. I also have read a good bit about plate chillers and cleaning issues. anyway, just the direction I went.
the boiling wort sanitization only works if you recirc for a bit with no water running. Remember if your plate chiller is working the wort should be below 'safe' temps by the time it's 10% of the way through the chiller.
I don't think that plate chillers are inherently better than IC's on the home scale. Pro scale I think plate becomes the only choice just because it's impractical to have a IC that big.
The advantages to IC include dropping the temp of the entire mass of wort quicker thus reducing isomerization and volatilization of flame out hops.
the third type is counter flow by the way.