Here's a thread that might answer your questions or at least give you some options.
http://www.cakecentral.com/cake-decorating-ftopict-52433.html
I've also posted my recent find on the Kitchen Aid sale from Amazon.com. It's at the end of that thread. In short my final cost was $154 and I can service it locally and it's made in the USA as opposed from being an import. Some don't mind either way but I was concerned with this issue and wanted something that I could get direct service on given the amount of usage it will get however the KA doesn't seem to have any problems for longevity!
Hope this helps! 
I haven't used KA but I have the Cooks. I kept my receipt in case I wanted to trade it in within the 30 days I had but once I used it decided there was no way I would get rid of it. The power is incredible.
I did a lot of research, and I am happy to report that I will be getting a Cook's for Christmas. The attachments will be available starting the 1st of the year or so. I think the power is what ultimately sold me (along with with sale price). That and all the other reviews from people who have it were positive. And, JC Penney has always been pretty good with other things that I have had to return, etc.
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