I have a Janome 6500 and love it. Great on piecing and FMQ. BUT do not like the weight when I want to take to classes. When I purchased it it came with many extra feet, walking foot and a acrylic table.
Getting extra feet for some machines can really set a person back $$, something to take into consideration. Plus getting to know the dealers is (IMHO) important. Some you will feel comfortable and 'at home' while others could make you feel like you do not belong.
Test drive the machines at the shops, see what all is included in the purchase. Do the shops offer any 'extras', if you shop with them - classes for learning the machines or other services.
Good luck on your search