I currently have 3 grand soul gems with petty souls in them...... yah.. i just killed 2 draugr high dreadlords too.. soooo im down 2 full grand gems.

Or you could just not soul trap guys that have lesser souls than the only type of gems you have on you.

That would work too.

except that maybe the bound weapons are easily better than anything else i can get.. makes it you know.. kinda difficult to not soul trap.......

Agree. This has been a problem since morrowind, but is exasperated by the perk in Skyrim.