If you can't manage the Triton, buy an older Korg. Every since the 01/W series, Korg has had on-board sequencers polished to a T. I scarcely NEED a sampler with my 01; aside from World music loops or my Mellotron CD, the Korg covers a LOT of bases. There's no Indian percussion set I know of, but that's about all I can't find or program.
If you were to buy an 01, X, or N series synth and an older E-Mu or Akai rack sampler, let's say, you'd be well-covered. Their libraries and compatibility are very solid.
You can also locate several useful starter software sequencers on the Net. If you can even halfway crack one of those, you can always port those sequences into your Korg.