Before I purchased my longarm machine I had researched all the machine brands for over 2 years. I test drove all of them anytime I could find them in shows or on display. I talked with lots of people, dealers and customers to get the pros and cons of each machine. When I encountered a fellow longarmer I would ask about their machine. I was surprised at how many of those gals invited me to their shops to "test drive" their machines. I called the sales departments of all the companies as well. I didn't do these things just once I did them SEVERAL times over a 2 year period. When sales would answer I would tell them that I wasn't ready to purchase a machine but needed some questions answered. Then I would sort of "judge" them by how the sales person would respond.
Purchasing the machine is a personal choice for you, but I do know how important feedback from others can be. I will be happy to pm you some of my research notes if you would like. I'm always happy to help fellow sewists.