For me, the perfect roti prata is a balance between flaky and fluffy. The skin should shatter a bit when forked and you shouldn't have to work to hard to tear off a chunk. Sin Ming Roti Prata gets it just right. I've been a handful of times now and they're consistently good. If they were closer to Puffin's and not a cab ride away I wouldn't go anywhere else for prata. I'll crown them, for now, as my favorite "travel prata."
Every time I visit Singapore I pick up a bit more lingo. Gosong means plain as in "two gosong" will get you two plain prata. Puffin's girfriend MC suggested I try one with banana and I'm glad I listened. It was as thin as the hot banana slices inside, which you could see through the crust. Really tasty, like a banana crepe. I now have a new love.
MC got an order of curry chicken, which I took a taste of. Not bad, but nothing special. Definitely not up to the prata standards.
I think I'll visit these guys every time I come to Singapore. They're not easy to get to, but worth the extra effort and cost.