Let me remind you, people, how powerful spearheads are (T3 UEF mobile missile launcher).
The cost is only 2 time of T2 MML, +20 range (80), 4 (!) times higher DPS and damage per volley (2400 damage).
As I understand, people ignore them because MML kind of lose power at T2 stage, when the opponent already has TMD, but think of dropping them: I see people dropping percivals to harass mexes, but perci DPS is only 1.5 higher per unit, and you can get 3 spearheads for the price of 1 perci, and because they are so cheap, you don't have to bother with expensive transports: You can send them even in T1 transports.
The barrage damage is 2400, compared to ~3000 of T3 bombers, yet spearheads cost 5 times less.
I hope you will start using them more, people.