I love that you'll all chime in and give advice on how you all do this, you have no idea how helpful this is.
Here's a glimpse into my thought process. I've no where near mastered a straight blade but I can muddle along and cut something passable, and I figured I'd try spirals before the straight blade got too ingrained into my process and just became automatically my choice.
Probably because I'm a inexperienced sawer I did not find spirals difficult to use as many have said, to be honest it feels like cheating. That said, with what I cut once the patterns off your not going to know how well I did as the whole is just made of abstract shapes, unlike lettering where one small mistake will stand out as they are predetermined shapes we are all familiar with.
Overall spirals were fun to use for me but there's also a lot of cons too, they're messy and I don't get the clean lines I do with a straight blade, as for the fuzzies I found if you go round the cut using the blade as a sander you can keep them down to a minimum.