I have been having pretty good luck with our Brew Blogger web site. I find between the water amounts calculator, and the strike temp calculator I do OK. If I need another temp calc, I often check with the beer calculus web site (multi-step infusion calcs are good for like protein rest I believe)... I think its nice to have the Brew blog site as it makes it easy to share recipes and see other peoples work... it could be better for integrating calculator output to a recipe though. The mash profiles are static as well - would be nice if it could be populated by the calculators...