I was considering 2.8 but actually went 2.6 (bontranger se4) and because of the 38mm rim they have a wide profile a tad more narrow and less squirmy in the turn
If your sold on 2.8 I'd look at Maxxis Reckon or Vittoria the Bontranger SE4 which come in 2.8 as well
I was running SE2 front and rear and for me they were awful. Grip was just not there to the point of me riding scared of washing out and not making climbs due to tire spin (never happened on my old bike with Conti). Bike came stock with 3.0 Purg upfront and GC in the back. 3.0 is two bouncy for me. Going all the way down to 2.6 tires which I. 37mm rims setup very large.
Will either go XR4 front and rear, or Butcher front and Purgatory Rear. I'd like to try Martello Front and Agarro rear also but it's a touch combo to fine in Canada and the Martello is very heavy.
I'm running 3.0 Purgatory in the front and a 3.0 GC in the back, it's solid but I'll go down to 2.6 tires next. Likely XR4 both front and rear. On wide rims they have a great profile.