If you're already using FL Studio, don't bother getting Reaper. You'll have two hammers that can each hit the nail just as well, in exactly the same way, and one of the hammers will gather dust. FL is great.
And if you're already using FL Studio... You might look at SampleModeling and their sax virtual instrument. Or just play around with a freeware saxophone soundfont and some FX to add inflection to the tone.
I actually learned to play alto sax. Then computer music programs started really hitting their stride, so I put down the sax and picked up the computer. You can play SO MANY INSTRUMENTS with a laptop and a MIDI keyboard!
Yeah praise God I get to use fl. It is like a huge supermarket, especially after you finally realize you can tweak the presets.
Thank you for the recommendations. And yes freeware has gotten so abundant, you basically can get whatever you need imo.
I have some sax samples that I like, they seem to sound better than when I try midi sax, although I did kind of like vocoding with a fake sax one time. Been trying to get good house leads from guitar instead (until I learn sax) and I think it has a lot of potential.
If you're able to pull off the little details and imperfections (that add so much imo) like playing live instruments with midi and do it with less effort, I'd say that's pretty sweet.