I use .50 cutters all the time and if you think they can't make a quick, clean, straight cut, you're doing it wrong.
I've had the same .50 cutter in my pocket for at least six months. I use that one twice a day, morning and evening, so that's hundreds of cuts already. Worked just fine this morning, will work just fine tonight. It will work just fine until it doesn't and then I'll pull another one since over the years I have invested in almost a dozen ($5 worth). Just can't turn 'em down at 2 for a dollar.
Sure a Palio cuts straight and clean - but not straighter or cleaner than the cutter in my pocket or the downstairs scissors (a free premium 5 or 6 years ago) or the upstairs scissors ($6). Maybe it's practice, I do smoke and therefore cut more cigars than most.