I prefer 2d6. over time I should average +1 damage and I will never do 1 damage. BUT I will base my choice on procs more than dice. So like I'll take a 1d4 with a good proc over a 1d8 with none or a less useful one.
Yes, that's the reason why magic missiles is the most powerful spell in EA. Never misses and does at least 6 damage, even 8 from level 3.