factory meters on our 08 1250 are close enough to getting new discs again, and covers have been planed once already. is it still dollars well spend to do vsets?

planter has been corn only for last couple years. hoping to get a little better spacing at a little more speed, and after last year hoping to hold vac better if we have heat during planting. 

dont ever plan on speed tubes on a 24 row, i understand i could do elec drives, but dont ever envision that either. 

just wanting some insight before i order. thanks