Flexi starter is for the most part ... just a cutting utility. It has little to no design capapbilities (atleast the type that matter) and you will have to design in draw, illustrator or something else then export out of that program and import into flexi when you wish to cut.
That being said, All I have in my studio is flexi starter ... in the shop, flexi
sign is all that is really needed. Stick to what you prefer ... There is also an economical cutting utility you can add to corel draw ... can't remember the name ... but they have a lifetime version with a dongle ... I would buy that if you don't want the hassle of another program.