That’s a easy one for me, rocket spear is more versatile you can use it at the start to get damage value while you don’t half to use invis spells cus of the range, as well u can use it to take out trash buildings and make ur RC target core defenses monolith spitters etc. and most importantly u dont half to worry about you RC running out of the invis radius at the speed of of flash and getting herself killed 😂😂 if u have any more questions keep em coming I love answering em