The Befaco Pony offers thru-zero FM, a wavefolder with a slider, and selective octave range in a compact 4hp size, providing a wide range of sounds.

The Erica Synths Black VCO2 is praised for its rock-solid tuning and fat sound, though some users wish it occupied less space in their setup.

The Winterbloom Castor and Pollux offers digitally controlled dual VCOs with saw, square, sub, PWM, independent pitch, and multiple sync/chorus modes, ideal for simple yet feature-rich sound design.

The Intellijel Dixie 2+ is noted for its precise tuning and tracking over a wide range, with an octave switch that adds convenience for users.

The Tiptop Audio Model 258t offers dynamic VC wave shaping but cannot sync oscillators, which some users see as a limitation compared to other models.

Owners appreciate the Frequency Central XVCO Two for its fat sound and the natural drift that enhances its presence when mixing multiple VCOs.

The Nano Ona, suggested over the Dixie 2+ by some, features an octave switch and additional sub outputs, and is approximately $65 less expensive.

The Doepfer A-111-3 micro VCO is praised for pitch tracking but criticized for its depth, which may not fit most skiffs and racks, unlike wider Doepfer models.

The Expert Sleepers Lorelei stands out for its three variable waveform outputs and unique x-mod input, providing distinct sonic possibilities compared to other VCOs.

Owners of the Noise Reap Paradox appreciate its dual independent oscillators with FM capabilities, describing the sounds as "wild" when experimenting with FM and self-modulation.

Owners of the Pittsburgh Modular & Cre8 Audio Cap'n Big-O highlight its built-in wavefolding and drive circuit, with both linear and exponential FM capabilities impressing users.

The Instruo Neoni's wavefolder at slow LFO speeds provides varied cyclical modulation, though it lacks FM index control and PWM options.