Moog synthesizers are really basic . Most synthesizers from KORG , ROLAND , and YAMAHA are far more feature packed than any of the MOOG synthesizers - Except the modular systems . For example , The Minimoog has no modulation source , the third oscillator has to function in that way to give it a modulation source . So , the more complex sounds are only gonna have two oscillators for audio while the third provides modulation .

The KORG MONO/POLY has 4 oscillators , an extensive modulation source , an arpeggiator , and can function in 4 voice polyphony . The oscillators can be independantly controlled in 4 voice mode giving you a small idea of the way an OBERHEIM 4 voice can work . The Minimoog can't touch any of these features .

The KORG MS-20 has a patch panel on the front so you can bypass the internal signal routings for more complex sounds that a Minimoog can't touch either .

The Yamaha CS-15 has 2 oscillators , 2 multimode filters , 2 envelope generators , and 2 Lfo's and can make sounds far beyond what a Minimoog can do . Also it has 2 sets of Control Voltage and Trigger so it can control 2 Yamaha synthesizers at the same time .

The YAMAHA CS-40M has one of the most extensive modulation capabilites of any synthesizer that is not modular . Each module can be independantly modulated and it's duo-phonic .

The Roland SH-3 has the ability to mix different waveforms at different footages even though it's a single oscillator synthesizer . It's far more feature packed than the Moog Micromoog and this is something that the Minimoog can't do either . Not to mention a better modulation source than either one . The SH-3A is the same except for the filter is a 12db/oct filter .

The PolyMoog is not worth mentioning because it's absolute junk . If you found one that is working , when you get it home , it will NOT be .

The Roland Juno 6 , 60 , and 106 are far more reliable than a MemoryMoog . So is the KORG POLY-6 .

When the Minimoog first came out in 1970 , there was not alot of compition . By 1972 the ARP had the 2600 and the Odyssey .
In 1973 Roland released the SH-1000
Korg the MiniKorg 700
Yamaha the SY-1
These were only single oscillator synthesizers and they were mostly preset except for the Minikorg . By the late 70s synthesizers from Japan were far better as far as reliability and features .
Some Good ones
Roland SH-5 , SH-7 , SH-3 , SH-2 , SH-09
Korg MS-10 , MS-20 , 770 , MONOPOLY , SIGMA
Yamaha CS-15 , CS-15D , CS-20M , CS-30 , CS-40M , CS-70M , SK-30 , SK-50D
Kawai S-60F , S-110F , SX-400
Crumar DS-2 , STRATUS
Sequential Circuits PRO-ONE
ARP Odyssey III , SOLUS
The great thing is that each of the different manufacturers had there own way of building these things , so they each sound different .