I have heard, many times, that you should stick with just one machine when making a quilt. My Viking is very heavy to take to a class or retreat, so I usually take a smaller Pfaff (which is so old, it's pretty heavy too!). When I get home I want to use my Viking with all the bells and whistles, but I stick with the Pfaff for that project. Do any of you see a problem with using two different machines to piece with?