You should have no trouble with most cutters. Graphtec and Summa are the best, albeit, Graphtec when it comes to pure cutting is the superior of the two.
Easier weeding would be the advantage of a high-quality cutter.
Graphtec's CE series is a great, more affordable cutter. It's whisper-quiet, great tracking, and the blade movement technology is sublime, resulting in more throughput even running at the same speed as other cutters.
Our Qe Plus cutter is made by someone I cannot mention by name. But I can say it's whisper-quiet, great tracking, and the blade movement technology is sublime, resulting in more throughput even running at the same speed as other cutters.
With prices coming down, and deals going up (economic times being what they are), I suggest you stay with new. These thing are reliable as heck, but if a main board or cutting head goes out, it get's spendy. The warranty is a great way to sleep at night, and the cost delta is much less these days than in the past.
My, slightly biased, opinion :^)
Best,
Jim