[EdwardWarlock]

I use both Fire bolt and Fire ball. :/

With Fire bolt [08] and Fire ball [01], I remember fire bolt still did a little more damage.

It does, but it is easily replaced by Fireball at later levels. Max Fire bolt does like 942 (+309) if empowered, and a normal level one Fire Bolt in your 7x does around +500 damage, with a 5 second cool down (versus 12 seconds at max). So would rather flick two fire bolts at twice the speed (and total over 1000 damage), or one that may miss and leave you in a 12 second cool down for about 900+ damage? The choice is yours....It's great at 48 because it does more damage than a level one Fireball, but Fireball soon takes over (at level 2) as your toughest single damage spell. If you have the money later, just reset the points (on Fire bolt's damage empowerment) to have an advantage at all levels. Otherwise I don't recommend it, because it will not help in the long run, and an empowered Fireball does way more damage.