MLDev .. Personally i have never had a thing for IE. Found sluggishly slow sometimes, just a generally better browsing experiences with Firefox.
This is your personal decision if you stick with firefox , but I have had enough with the constant updates which affect other addons etc. Plus thing seems to go a little buggy with v17 and v18 (quite a few posts). I have installed v16 and turned off all Updates until neccessary... your choice.
Cheers mj