I bought the set from homebrewcompany and it has been brilliant so far. If you need a wort chiller, the package that includes the boiler, chiller and an AG kit is just brilliant value (especially with the 5% HBF discount!).
I had been looking at Peco boilers with either the thermostat or full temp control. However, having used my basic one I now can't see the point if having a thermostat control on the boiler. For example, I thought I would want to set the temp to 66c or whatever and maintain this for the mash, but actually with 24 litres or so of liquid, and a duvet (or similar) you will find that the temp doesn't drop much more than 0.5c.
As Callum mentions above, just look out for limescale on the element (depending what your water is like). But a quick clean of the element after each boil is all it needs.