Simple rule for gems: match for the socket bonus if it gives +STR (any amount), use +40 STR red, +20 STR/+20 HIT blue, +20 STR/+20 CRIT yellow. If the socket bonus gives +HASTE or +CRIT, just fill with red STR gems regardless.
For reforging: if you are under 26 EXP on both weapons before reforging, reforge for EXP, preferably from the non-CRIT stat of items with CRIT. For items without CRIT, always reforge for CRIT from the following order of preference: HASTE>MASTERY>HIT>EXP. If you have reached the EXP cap and every item has CRIT, reforge the non-crit stat of remaining un-reforged items to HIT.
This is because your stat priority is STR>CRIT>HIT>MASTERY>HASTE; you can only get more STR from gems and enchants so make sure to get as much as possible this way, then focus on getting the most CRIT from reforging, as well as making the 26 EXP cap and then reforging anything remaining to your 3rd best stat, currently HIT.