Sewing machine question

I may be in the market for a new sewing machine.

I plan to do some quilting as well as home decor and some clothing.  The machine I have now is designed for occasional and light sewing though I’ve done some extensive sewing projects in the past several years.  It’s just not keeping up with the demands I’m placing on it.  Mostly because it’s not designed to.

I want to machine quilt twin-sized (or larger) quilts, which are a bit larger than the 15 x 24 inch items I’ve been doing.

For all you quilters (or non-quilters) out there: What sewing machine do you use or would recommend for machine quilting?  Pros and cons?