I've been wanting to up grade to a DBB turbo for sometime now. Saw that F.T. has a 10% off sale 'til the end of the year. That saves about $175. Based on my sig, is the PT6262 the best choice? Would like to lower my ET's over my GT6131E? Currently 7.1 in the 1/8, 11.1 in the 1/4. (have need to be in the 6's and 10's)