I hope you guys will help with this. Are there lots of useful styles available?

I only have experience with a Yamaha psr740. Which has 160 styles. A couple of blank style spots for user styles you can upload to the keyboard.

As a songwriter (who doesn't play very well), an arranger is seriously cool. It's just amazing to me what I can do on even a 740 versus me and a guitar.

Of the 160 styles, many are unusable for me, either because I don't like them or because they are almost the same as another. So, out of 160, I might use 30 or so often.

Point is, having access to lots of styles, that would really help me as a songwriter. And I did find a couple of styles that I downloaded and they are really cool.

Question is, are lots of good styles available? How many? This is pertinent to any arranger. I am not locked in on Yamaha, although I do like Yamaha. Doesn't matter... whatever way I could get access to the most styles. Or maybe software is the answer?

I'm just asking are there loads of good styles out there? I have about 30 that I use. If I had access to a hundred or two (that I like), that would be very cool.