If you're looking for a good analog emulation at a good price, Klerhaim is worth the investment. It does a great job of providing that old Moog style sound.
It's one of the first VST synth plugins I've bought for less than $100, where I could close my eyes and imagine I was sitting in front of an actual analog synth.
If you want this beast to sound more 'polished' like other programmers emulations; add a reverb, or delay with about a 20% wet mix.
This is easily the best analog emulation in its price range.