I have had an overlocker (I think it's the same as a serger) for about 20 years. When I used to make a large number of garments (mainly for self and children) I found it invaluable for finishing the seams. I now use it for finishing the seams inside cushion covers, I patchwork and quilt these and sell them for charity. I love it but I am considering buying an enbroidery machine as, like you, I think it would give me more flexibility in design. The big problem is that here in the U.K. they are very expensive. However, good luck to you with whatever you choose.