Strengthen up to 60 every piece of equipment, but then focus all your money into your group and get group skills.. But tbh. Donate as much as you can to group and get your group skills up. Use extra money to slowly strengthen your equipment.

I would donate more, but im waiting for the group skills to be upgraded. Every skill is maxed for me atm. I'm still donating, but not as much as before. This post was last edited by VxGrim at 2016-9-15 07:29

Wait until each cost over 100k like it is for me at 67

dear god, that's too much :L

I wi* still cos 40k or 100k. Its 187k to get to 73. Thankfully all mine are maxed until I level up tomorrow.

Always Group Skills first. There is a limitation on Group Skills due to the time limit as well as donation limit whereas Strengthening is done at any time you have money. Usually the gated, or restricted aspects of the game are the most worthwhile. Mathematically Strengthening is inferior to Group Skills per coin spent until you start hitting around level 30 group skills. Strengthening and Group Skills are merely ways to gain power. They do the exact same thing but at different rates, with Group Skills being a faster rate of power growth.

Until people start hitting group skills level 30 I recommend Group Skills first and leftovers into Black Market if applicable and remainder in Strengthening.

If any of you feel otherwise please provide mathematical proof rather than anecdotal evidence, as any and all of the strongest players will attest due to the sheer efficiency of resource usage and math - Group Skills > Strengthening in general until ~level 30 group skills. Typing this on a phone or else I would Math for you all.

Also group skills seem to make a big leap in cost every 10 levels. Seems like a 40%ish increase. For instance 69->70 jumps from ~120K to 175K, so Strengthen in increments of 10 might be a good idea if that's your main focus.