@OP- Trinity is a costly product and the systems will have higher price compared to X120e . You will not find a Trinity based system in Brazos price point.
If you are looking for X120e type of systems, wait for Brazos 2.0 refresh, should be dropping by soon. High clock, turbo core and efficient chipset to provide better performance and power consumption.
Wait for Trinity. But answer me one thing, why are you even buying x120e if you're considering Trinity as trinity is supposed to give balanced CPU performance with very good GPU performance? But on the oother hand x120e doesn't lies in same category with very poor graphics. If you want good graphics performance along with some good CPU, then wait or get x120e.
I still do not get the way you judge processors. Both cater to different audience and needs. Brazos is a low power more agile kind of system, trinity or Llano for now is more performance and high power system. Not meant to be bifurcating each other.
Brazos cater to low screen high battery life with decent performance, more than that of ATOM. Trinity/Llano offers full blow quad core with ample graphics at the expense of battery (still decent).
Just like you do not compare Atom to Core series likewise Brazos and Trinity are totally different.
Yeah, it will be at least 20k.
The trinity ULV 17W and LV 25W are premium offerings, these are cherry picked chips meant to be sold at premium prices, you will never find Trinity
LV/ULV system in 20-30kish range.
Edit - Congrats on the purchase.