Hi & Welcome!
There are a variety of machines available. Much depends on the type of projects you want to do. I have the Scan n cut and also the Accuquilt machine. I wouldn't use the SNC for cutting out quilt block projects.
The Accuquilt systems with the appropriate shape dies makes for fast cutting of a whole quilt. If you are experience difficulties with cutting, this is the one I would consider.
I'm wondering where you are having problems with cutting? Are the lines hard to see? Try different brands of rulers. Are you having problems with the rulers slipping? What cutter are you using?
There are many different tools that may be just the "one" for you. Personally, I cut fabrics with the 60mm rotary cutter. It is easier for me over the 45 mm cutters. Do you have a local quilt shop that would let you work with some of the tools to decide which ones fit you best?
Hopefully, other posters will share their views on these different systems too.