Since you do so much sewing the professional model is a much better investment. It looks like a home machine on the outside, but inside it has the speed and stitch quality that a professional advanced sewer needs. It will complete a wide variety of garments quickly and efficiently. It has lots of utility stitches and a good variety of decorative stitches too. It doesn’t do pre-programmed hooped embroidery -which is a good thing! You can do free motion embroidery easily. It is a table top home machine with the motor and head in one unit.

If you wish to buy an industrial machine that does a variety of stitches then the Bernina 950 is a good machine. It is a true industrial meaning the table, motor and head are separate. It offers 14 stitches and a semi automatic buttonhole.

Here are the two machines:
http://www.berninausa.com/product_detail-n2-i223-sUS.html and in it’s price for purchase with table, motor, and head: http://www.allbrands.com/products/abp00796-0070.html
The Janome worthy of your talents: http://www.janome.com/index.cfm/Machines/Sewing-Quilting/MC6600P

I have several industrials and I find many home machines far too slow. I run home machines at a “pedal to the metal” speed and I find the Janome is the closest to industrial speed. Most domestic home machines, even the expensive brands, don’t have the same level of speed that a pro is accustomed to. Hope that helped a bit.

while you can get fast home machines they still aren’t able to keep up w/ the volume of work industrial machines usually handle.

if you’re doing enough work to need an industrial machine, then you may want to look into getting a used or refurbished one. or go new if you find one in your price range.