A couple of years back, our own Enrico Punsalang, who is based in the Philippines, named the Yamaha PG-1 as his Editor's Choice pick of the year. If you click that link, incidentally, all you have to do is read the title of the piece to see the TL;DR version of his thoughts: Yamaha Should Totally Sell The PG-1 In The US.
If you've read my writing, by now, you probably expect me to agree. And I do, even though I'm well aware that small-displacement machines often have a tough time making inroads in the US. Much as I love them, they will likely only ever remain a niche interest for riders here, simply because our country is just absolutely heckin massive.