Hi TweedSAFD,
The choice between Talalay and Dunlop is a matter of personal preference and both of them come in a range of firmness levels. Dunlop feels firmer than Talalay in the same ILD (softness level) because it has a higher compression modulus (which means it gets firmer faster as you compress it more than Talalay because it is a denser type of latex). You can read more about the different types of latex in this article and in post #6 here and there is more about the different “feel” of Dunlop vs Talalay in post #7 here.
My personal preference is Talalay (which is what I sleep on) and my daughter’s personal preference is Dunlop (which is what she sleeps on) and she would have none of my Talalay preference … just to highlight that it really is a matter of preference and not a “better or worse” choice 
Phoenix