Moved this over to keyboards.
I can't comment on any of the alps discussion, but I was in a similar situation a few years ago. For me, the solution was MX clears. Although they're heavier than MX blues, they have similar tactile feedback (although not generated in exactly the same way). If you like the feel of MX clears but want something lighter, purple zealios have the same stem shape with a lighter spring -- but I don't think any keyboard comes stock with zealios.
Browns are about as light as blues, but for me the tactility wasn't enough. I actually moved away from browns to blues, then started looking for something better.