I'm a newbie to electro and am at the stage where I'm wondering if an analog synth would be a sensible investment. Here's a few bars from several of the tunes I'm working on, it might give an idea as to what stage I'm at:
I've programmed these instruments myself in Logic.
I have even finished a tune but its just my first attempt:
Here are some of the analog sounds I like:
At the moment I have a Mac with Logic Pro, an audio interface and a midi keyboard with controllers. I also have an old tascam postastudio which I hope to start using soon. I feel my biggest weaknesses are the arrangement of my ideas into a complete tune and getting my ideas to evolve sonically. For this reason both abelton and a synth will lots of knobs seem attractive to me.
Should I get an analog synth and if so which one should I start with? I want to be able to control it in realtime with knobs or midi controller. Being able to interface from my computer via midi and/or midi to cv/gate is of course a plus if the sound isn't compromised. I have over $3000 saved up but I'd like to spend it sensibly.

Would also appreciate any other advice. I don't really play the synth, usually only when I need to figure out a melody I'm trying to program into my daw.
Thanks for your help,
Barra