The lady beside me at a retreat 2 years ago, had a 4.2 and raved about it--enough to make me seriously look at one. Then I went to a Creative Needlework show and Pfaff had the 4.2 and the 5.0 on sale. Well...the price of the 5.0 was fantastic and I really liked what I saw and felt as I test drove it. Yep ended up with the 5.0 and have not regretted my decision. But the 4.2 would have been the winner if the 5.0 had not been there.
Oh and the IDT is great!! I sure miss it when I switch to my Janome (yes I have them both set up. Sometimes it is easier to just go to the other machine than switch thread colours)