Xhun Audio

Little One seems rather overlooked, which seems a bit of a shame to me, considering how good it is.

I don't possess a modern Moog for direct comparison, but to my ears this VSTI synth sounds gorgeous; thick, rich and 'analog' sounding.

Here's a great video that demonstrates the sound very well;

http://www.youtube.com/watch?v=kOOxLlqPUUE#t=56

It's not expensive, and there's a plethora of presets bundled with it. And unlike the physical synth it's modelled on, LO does polyphonic as well as monophonic. I like it particularly for rich pads.

There's also a 'rack' section on a second page, which features a gate (for making choppy, trance sounds), a step sequencer, and two effect slots, into which you can rack some useful standard effect units; reverbs, chorus, delays, distortions, etc.

Synth Edit made plugins have garnered a bad rep in years gone by. Don't let the SE label put you off. This is a very high quality synth.

For a (modern) Moog-y synth on a small budget, I don't think you can do better.