Anyone is great. I personally have three Brother machines, 7500, 8200 & Innovis 4000 and a Pfaff 7570. But if you're interested in buying software Brother is the easiest, user friendly and Artista is really great too. I have Brother, Artista, Viking and Pfaff software and 99% of the time I use just the Brother and Artista software programs. They all have features that are just a little different from each other, just a matter of what you're looking for. But, Viking machines have the biggest area hoop on the market right now. But again, you could also buy the hoop it all hoops for larger designs.
No matter which machine you get, you'll have years of fun!