I use Texas BA II PLUS Professional - This is the best calculatior for the exam!!!
It is very easy to use- displays every input variable as you type. e.g. when you want to discound CFs - it displays CF0 CF1 CF2 -so on -- and you may even go through again to check if you typed correctly-
I've never tried Schweser - and have no desire iether-
Besides the notes you make this site may com in handy (you may know it) I discovered this site and believe or not used it along some hilight book and almost passed the exam

)) you know about my ethics-
Go through it! EVERY LOS is answered really Shortly!!! You'll like it!!!
http://www.totalrecallpress.com/cfademo/
I oredered CFA Level I Curriculum 2007 now;
I've already downloaded ethics study session free, and it was so comprehensive that if I had that for my exam I wouldn't have failed-
Now I'm very determined - will start my study at the end of September through may and lets see what happens!
GL!