None of the above!
I have a 2.5 Maxxis Assegai 3C Maxx Grip on the front and a 2.6 WTB Trail Boss TCS Fast on the rear.
Edit: I have just gone back and voted 2.5/2.5 because that was what the bike was originally fitted with (a Maxxis Aggressor dual compound on the rear).
In the back since its winter and wet check out this mini moto tyre. Vee tire flow smasher. I bought it on a whim because it was on special. Works out its freaken awesome. I thought it might be squirrelly on the roots and hardpack... but not it doesn't. Combine this tire with the ridiculous up of the Voima and boom crazy ass winter climbing