Hi Gus and a good question that i get asked pretty regularly with NNSW/SQLD agronomy clients. Short answer is there is no one size fits all. Sometimes the disc option is best where summer planting and heat/wind can dry away quickly from the seed and also more precision options (depth/seed firmers/etc). Tyne is used more often with our clients, many who have adopted cover-cropping and strong focus on cover. If you have the luxury to have both then that's the ideal scenario.
Glad to see your focus on cover. When we lose 250-300mm of rainfall to evaporation and runoff each summer fallow, cover is vital. For every 1mm of stored moisture, we aim to turn that into $5/ha of grain. Crop sequences, crop/variety choices, etc all change when the focus is on capturing more rainfall and turning around the continual decline in soil organic matter under current farming 'best practices'.
Ian Moss - agronomy director at Farm Agronomy & Resource Management (FARM)