firefox owns ie6 i dunno about ie7 i will have to try it out but im leaning towards ff since its sooooooooooooooooooooooo much faster on my pc but thats just me eh
I like ie7 so far, FF seems to run slow and is hit or miss on alot of sites like ytmnd.com and myspace.com. ff2 might end up being my default browser if it loads faster than the current version.