Tiller Which tiller blades?

[Peej]

I have a Bush Hog RTL60 tiller and will soon be replacing blades. Was wondering which blades to use "C" - speed blades or "L" style?
Parts manual shows either. Any pointers/ideas on the cut and end results?

 

[sweettractors]

The L design will be a little more agressive that than the C type, However, the C type will be better in rocky conditions, Ken Sweet

 

[Peej]

Thanks Ken, Not real rocky here, May try the "L" blades this time.