Best US Tax Software

I'm just finishing up my first year of living and working in the US - I'm assuming I'll have to file both US and Canadian taxes as I worked for about two weeks in Canada last January before moving to the US?

I know nothing about filing US federal and state taxes but I'm hoping a good software package will be all I need. Any suggestions for the best one? And is there anything in particular that I need to know when filling them out?

I use ufile.ca for canada (it does departure tax, etc).

I use turbotax in US, because it has ability to do the RRSP forms Cdns usually need.