It really just depends on you as a person, IMO. I don't think I'll ever switch from FL Studio because it just clicks with me, and I find the stock plugins (compression, EQ, etc.) to be fantastic on there own (Though stock plugins on any DAW are going to be good) You're just going to have to do a little searching to find good samples and sounds unless you just want to make electronic music. It's great for that.
But this may be different for you, you may prefer Reason, Studio One, or even Pro Tools if you're doing a lot of recording.
My suggestion is to pick 3 separate DAW's that interest you, and then download the trial versions of all of them. Find what clicks with you the most (What you enjoy using the most), and then stick with that DAW. Learn the ins-and-outs, the shortcuts, the tricks, etc. and learn a whole lot about the mixing process and what everything is doing to your mix. (especially EQ and Compression). I can guarantee you that if you find a DAW that you really like, you won't ever have to switch around. BAD IDEA, unless you're using something like Garage Band, you'll probably want to upgrade that eventually. You can still get great mixes out of it though