A balanced approach to make quality less of a gamble, allowing you to more consistently produce quality items at the cost of power and speed.
Quality module 1: +20% Quality | -5% Speed | +100% Consumption
Quality module 2: +30% Quality | -10% Speed | +150% Consumption
Quality module 3: +40% Quality | -15% Speed | +200% Consumption
The quality loss of speed modules is also increased to -5%/-10%/-15% to compensate.
Thanks to TheInsaneOne2932's Reworked Quality mod for the idea: https://mods.factorio.com/mod/reworked_quality