I have a lower end Janome and I'd never buy another one. I've sewn for over 55 yrs and have a total of 5 mechanical machines. (not computerized) and it's the worst machine I've ever sewn on.
I'd go with a Singer, Bernini, Brother, or Phaff personally. Buy the best you can afford.
Don't overlook older machines that have proven track records. My two Singer 401A's (1950's era) are as solid as the come. Perfect stitches, metal, and parts are still available. I have a 1010 Singer Redeye Treadle that sews perfect stitches. Found it on craigslist.
Just make sure you try them out before you buy a used one. Wiring can be important as well.