Product review (5 stars): Bosch 800 Series Gas Cooktop
I bought this because it had 5 burners in a 30" cooktop.  Most of the 5 burner models are larger and wouldn't fit the hole already cut in my granite.  If you put big pots on several of the burners it does get a little crowded, but rarely do we have more than 2 or 3 going at the same time anyway.  The high BTU center burner is great.  It gets things hot quickly.  I've been using this for about 2 years now with no issues.  It takes some scrubbing to clean, but if I did that when it first got dirty that probably wouldn't be as tough.  It was easy to install as well.