Algo de info sobre los chips:
Chips with the black diamond are the one with the optimal cost, u get them by luck.
....also if you fuse 2 black diamond chips (ot the same type obviously) the improved chip that you'll obtain will also be a black diamond chip.
In other words, do NOT sell the black chips you find and use them for fusions between them
No level - 4 lowest
+1 - 5
+2 - 6
+3 - 7
+4 - 9
+5 - 11
+6 - 14
You can fuse chips with black diamond beside them, indicating they are the lowest cost you can possibly get, to get to the next level with the lowest cost. You don't always need 2 chips with black diamond beside them to get the lowest cost. However, there is restriction at certain level.
To get the lowest cost for +3 and +5, you need to fuse the lowest cost of +2 and +4 respectively. At other level, you can still get away with 1 additional cost. ie. a +3 chip with 7 cost can fuse with a +3 chip with 8 cost to get +4 chip with 9 cost. However, if you fuse a +2 chip with 6 cost and a +2 chip with 7 cost, you'll get +3 with 8 cost instead. You can do the former from no level up to +2.
My current setup is mostly chips with diamond, making death an instant restart from save point. They are just too valuable too lose.