Well, I don't know about your PCs, but here are two NPC examples of mine (of similar levels):
1) Semi-spellcaster, 11th: +210 OB, +100 BD (no shield), +192 DS, x2 PP multiplier, +3 spell adder. Some item examples:
* main weapon: +30 OB. Any spell from Warrior’s Way" cast on it gets cast one round faster and is improved by one degree. It also increases its owner's intuition, allowing her to better thwart bluffing defenses such as the use of the feinting skill, the tumbling attack skill, a Displacement spell, etc.; her opponent's chances of success are lowered by 15%. In addition, if its owner injures any creature with it, she then may thrown it at aforementioned creature at a range expressed in kilometres rather than metres, with an additional bonus of +33 and range penalties expressed the same way in kilimetres,
* add +20 OB, Haste 13 rounds a day, +3 to CCs 8 fights a day,
* may cast spells from "Concussion's Ways" (level 11-20) as if her own.
2) Warrior class, 11th: +189 OB, +90 DB (+50 DB shield). Some item examples:
* main weapon: +25 OB. It cancels 25% of DB invested to parry it and adds a vibration critical of the same level to all criticals inflicted. In addition, it adds two rounds of stun any time it hits and inflicts a critical, even if it results in no round of stun, and even against creatures normally immune to stun,
* protects a AT12, encumbers as AT5, +20 DB. Inflicts a A electricity critical to any creature who injures its wearer (with or without a critical),
* can catch all projectiles fired or weapons thrown at its owner, regardless of the number, speed, size, type, direction from which they were fired/thrown, as long as her owner is aware of possible attacks and has both hands free.
Let's say the PCs are well-equiped enough to deal with the NPCs...