For spells, the general rule are: 1. Don't use anything higher than wind surge on normal spells, and any of the barrage will bre pretty much the same as each other barring effects, so I'd still use Blood Barrage over Blitz. This assume you are not in DG and you do not have access to seismics, in which you should always use the highest spell available to you. 2. When choosing spells, do not choose spells whose requirement level is higher than the weapon you are using, except polypore strike, since its level requirement is an anomaly. Other questions: 1. Power armor's 10% damage boost is probably the most misleading statement regarding Power armor in the game. It is safe to completely ignore the % 'boost' and just go by the numbers. 2. Nex armors are currently one of the most used bossing armors in the game since, as a general rule, nothing in the game requires pop armor's armor and LP, so Nex armors are well worth using if you are willing to invest in the cash, although if you are only doing solo bossing, POP armor suffces until you decide if you want nex armors. Groups usually want you to wear Nex armor (no experience with pvm clans, but some only take those who are in nex armor). 3. Most of the prayer questions can be found in the wiki. Since prayer potions are so cheap now, there is no reason not to slay with the 95 curses active at all times. The biggest difference I have found is general found in the accuracy boost, I never pay attention to max hits. 4. No idea on how exactly effective are overloads, but I use them whenever I do combat, be it slaying or bossing. 5. If you use abilities, Critical strikes are 60% damage boost, on average, over non-crit abilities. An ability has damage range of 25%~100% of the damage written on its text, Critical strikes do 90%~110% of the damage written, so comparing the average, 62.5% over 100%, the damage boost is 60%, therefore every 1% of crit is worth roughly 0.6% dps (in reality it's less because Critical strike dps boost diminishes itself).