Richardson being in the top 5 makes me very happy, because I have such strong personal and professional ties there... it's basically "my city". I went to both high school and college in Richardson (UTD alumna here), I've worked in two different companies in Richardson (and I'm currently at one in a suburb next door to Richardson, which is also on the list), and it's a great place to both work and live. Much better than anything in SV, IMO.

One of the companies I worked at in Richardson had a very successful exit, too.