I bought a Janome about 2 years ago and wonder why I left it sooooo long to buy one. I do make a lot of clothes for myself and my granddaughter and the odd garment for hubby and they are done in no time at all. I have not used it for quilting but know of a few others that do.
I guess you need to ask yourself the question "what am I going to use it for?"
Where I bought mine I had an intensive 4 hour lesson and took heaps of notes and photos and would suggest that it is "must" to have a lesson as just looking at an overlocker can be a bit frightening.
Let us know what you decide.