Lots of great insight and advice on this board and no exception here. When my brother and I inherited $$$, twice, actually, much of mine and all of his ended up spent on living expenses while being under-employed. Maybe that was good for my boys to have a mom working part-time for some critical years, who knows. But when I saw that it was just replacing earned income but would soon be gone, I bought a house at a great time and we have more stability now, no more moving every few years or scolding them to be quiet to avoid aggravating the neighbors. It is YOUR money, your decision. Go for the machine you want that will meet your artistic needs. We all know the happiness and mental health benefits of sewing. The Bernina is a sure thing, quality wise. I always wanted a Pfaff 7570 when I was young and now wish I had splurged. Those machines are still going strong and their smart and fortunate owners are hanging on til the bitter end. I finally bought a new Babylock Quest Plus after 20 yrs of sewing on a basic, mechanical, so-so Singer and WOW! I should've upgraded long ago. I also bought some FWs and a machine for my kids. I might just go for a machine with an 11" harp next year. Making up for lost time! My $$, my business. And I still give in charity, send my boys to private religious school, pay my bills, etc. Voting that you go for it and also keep the 6600 you love as a 2nd machine. Buy a vintage machine on top of it all too. Say a prayer of gratitude for your aunt everytime you enjoy the blessings of her gift to you.