I have a 6500 and 11000 and love them both. I eyed the 7700 aka Horizon, but . . .
IMHO Janome is very user friendly. The only draw back that I can think of is the weight, the 6500, 6600 and 11000 weigh approx 25 lbs. I am not sure about 7700 but is would assume that it is about the same. Also the 'size' can make it difficult to transport, I had to purchase a a larger machine tote ($$) not just one of the standard/cheaper ones.
I say GO FOR IT, you can't go wrong.
