Product review (4 stars): I really like, almost love this cooktop
Our old cooktop was a builders grade gas cooktop.  The burner grates were enameled and nearly impossible to clean and I had really, really been looking forward to getting a new cooktop.

We installed the cooktop ourselves and that job was pretty easy overall, but we started with the right size hole, so we didn't have to fuss with cutting a bigger hole.  I'd definitely say it was a very doable do it yourself project and we really didn't have to look for directions beyond the bosch directions.

We are very happy with how the cooktop cooks, the knobs are very sensitive and we can adjust to any temperature we need.  Yes, the top is very crowded, but if you don't want that, then don't get the 5 burners, get the 4 burner cooktop, or get a bigger cooktop, there's really only so much you can do with a 30" cooktop.

The clean up is incredibly easy.  After dealing with our old cooktop, which I could never really get clean, the actual cooktop or the grates were both very difficult to deal with, I'm delighted to just have to clean up with soapy water.

The knobs do get hot, but I can live with that.  I recommend the le creuset pot handle grippers to deal with the hot knobs if your fingertips are sensitive to heat, otherwise, barehanded will do the trick.