Adjusting the R-1 mix this year

[GREENITUP]

Contemplating using something besides my usual 3-way Ester in my R-1 mix this year (with Baracade and a little N). As always - I'm looking at cost vs. results and usually pay more for something that works the way i want it. That said - does anybody use a more premium product that 3-way on liquid apps in cool to cold temps (fescue lawns)? like Speedzone (or a generic version of it). Actually - the cost per gallon is almost the same around here. Any recommendations appreciated.