i use a WH7016M (30amp version) to drive a economy kettle element for about 2 years - http://www.ebay.co.uk/itm/WH7016M-AC-22 ... 2a2a895f63
to control my BIAB bucket - with the probe in a theromwell, it works very well.
fill bucket, put in bag, set mash in temp, comes up to temp, mash in...