Future Audio Workshop has reduced the price of Circle to € 49. This makes the VST plug-in immediately an interesting cheap synth for beginners.
The creators have given Circle a clear interface with great animated visuals. For example on the envelopes you can find a ball running, so that you can see what stage the envelope is.
Circle comes with quite a few presets, but also invites you to make your own sounds. On the website of Future Audio Workshop you can also find a number of tutorials which guide you to create interesting sounds with Circle.
If you are interested in this plugin, it is certainly advisable to try the demo first. A disadvantage of Circle is the CPU consumption. This is relatively high, so older computers could have problems with the power required to run the synthesizer.