From what I researched online, Maurivan PDM appears to be similar to EC-1118, a work horse yeast that doesn't bring much to the wine, Zymaflore RX60 appears to bring much more to the wine:
combining outstanding fermentation capacities and excellent aroma
production and revelation. Suitable for all types of red grape varieties for elaborating modern, aromatic red wines which are supple on the palate.
Fermentation characteristics :
• Tolerance to alcohol: up to 16.5 % vol.
• Tolerance over a large temperature range: 20 - 30°C.
• Medium-high nitrogen requirements.
• Low production of volatile acidity and H2S.
Aromatic and organoleptic characteristics :
• Aromatically intense nose and palate profile (fruity, red fruits), while maintaining varietal specificity.
• Particularly optimises the aromatic potential of Syrah grapes, giving a balanced wine with a clean, fruity/spicy profile.
• Produces wines with supple mouthfeel.
This yeast sounds like an improvement!
Keep us updated!
Tom