I have a Brother Innovis D 4000 purchased at least 10 years ago. It was the top of the line at that time. I went with Brother because it was the only one that cut the jump stitches and had an automatic needle threader that was wonderful. Now, I think all of the time of the line machines have those two functions.
When I look now, I am looking for one that has a super huge hoop...at least 6x9 inch or bigger, large display screen, ease of operation, deep throat...at least 9 or 10 inches and I can buy from a shop near me so I can get lessons and repairs done. The important thing is you need to go look at machines and make sure you like the one you are buying. I really liked a Janome but I couldn't make the auto threader work. Neither could the sales person. Bernina had a great machine, but the price was way too much for my pocketbook. Many people love the Husvarna/Vikings and swear by them. There was no one selling them anywhere near me so I could try them out. Now, I think they have a space rented in my local Joan's. When I buy a new one, I will probably stay with Brother because I am familiar with the brand, but I will go to the biggest quilt show that is close to me to get a look at all the brands. For me, that is the IQF in Houston, TX. Then I will probably buy from my local Allbrands store. I'm not sure if they give the lessons, but at least they have sales people who know a lot about all the machines they sell.
Good luck with your quest.