I just recently got a new machine with a large throat space. My first new machine in 37 years. I have quilted many large quilts on my old Viking. It was a real eye opener when I was shopping for another machine and I saw my current machine in a display with vintage machines! The only reason I was looking at a new machine was that my Viking was having some foot pedal issues and I can no longer get parts of any kind for that machine unless I or the repair person can find one off another broken machine that is being used for parts. I figured that if I was looking at machines I would go for one with a large throat area. If I could get parts for my Viking I would have continued with that. You don't need a large throat machine to do quilting nor do you need a lot of decorative stitches. My Viking was top of the crop model when it was new with lots of decorative stitches (you use cams for them) and I rarely used most of them. I have made wedding dresses, a tux for a wedding and so many garments and quilts it makes my head spin on that machine. My avatar which is a fairly large quilt was free motion and straight walking foot quilted on my "vintage" Viking. Use your current machine, love it and use the extra money saved to buy more fabric. If it breaks and can't be fixed or you're feeling flush in the future then go for a new machine but until then your current machine should be just fine.