However, there are some other considerations here that can make the situation more complex so lets go a little deeper...
In EQ2, (unlike EQ Live) each spell (or combat art) you earn is available in several levels of quality. From lowest to highest these are:
apprentice - awarded when you level
journeyman - created by crafters from common materials
adept - dropped by MoBs or purchased off the broker
master - created by crafters from rare materials
grandmaster - upgraded from master through research
Each ascending level will heal for more (or do more damage) In fact, the difference between say apprentice and adept can be impressive and the difference between apprentice and master can be shocking!
Wanted to correct some info in the post I've quoted.
The actual levels of effectiveness are as follows: Apprentice
= awarded upon level Journeyman
= created by tradeskillers using common harvests and purchased fuel; can be purchased from broker; also available using new research sytem Adept
= dropped by mobs and can be purchased from broker; also available using new research system Expert
= created by tradskillers using common harvests and a RARE harvest along with purchased fuel; can be purchased from broker or consigned; also available using new research system Master
= possible mob drop; CANNOT be made by tradeskillers; can be purchased from broker; also available using new research system Grandmaster
= only available via class attributes as you level
I find the new research system incredibly helpful, especially if you can afford to skip Journeyman level and loot or buy Adept upgrades and begin research at Expert level.