Test drive both machines and pick the one that suits you best.
I know that I would go with the Janome even tho I have never owned one, but have friends that do and speak very highly of them. That will be the next machine I buy.
Second, local service and support is important. If you buy from a local dealer, you can get classes and all the information and help you need as a rule. However buying from ebay or other mail order dealer, local shops DO NOT have to service that machine and usually won't.
I moved from my home state a few years ago for a while and the local Bernina dealer there refused to service my machine because it wasn't purchased from them. So had to wait until I moved back home to have it serviced. Just did my home maintenance myself. To me this is a big consideration in purchasing new machines.
Good Luck in your new purchase.