just for fun - but spoilers ahead:
Battle against Bodhi in Chapter 6. My party: (Levels are fairly won, no editing or cheating!)
Protagonist - Fighter/Mage 7/18.
Anomen - Cleric 22
Mazzy - Fighter 20
Imoen - Thief/Mage 7/17
Jan Jansen - Mage/Thief 13/16
Jaheira - Druid/Fighter did not partake in this because of the quest (abducted)
Now - some of us already have HLAs, but against Vampires the danger is always level drain, and Negative Plain Protection does not last long enough. I always had difficulties with this battle, even when Drizzt, the Order of the Radiant Heart and the Shadow Thieves helped. But this was my - the players - fault.
Protagonist wears Amulet of Power - immunity against Level Drain. He wields Daystar+2 and a Helm of Brillance. Two Sunrays spells from these items.
Anomen wields the Mace of Disruption+2, immunity for Level Drain.
The rest of the party supports from the second row. Mazzy has the Flame Tongue (now renamed), which gives +4 against undead, she is no joke...
This was a walk in the park, while the help is fun, we would not have needed it. Protagonist and Anomen waded into battle, and it seldom took more than 2 Hits by Anomens Mace of Disruption to kill a Vampire. Bodhi lasted a bit longer, but Protagonist, to simplify things casted Energy Blades - she did not need all of them...
I played this scene about 3 times (years) before - and never caught on the massive advantage of these 2 items, which immunize against Level Drain. The Mace of Disruption is so powerful, we only used one of 4 Sunray Spells (Anomen had 2 prepared, what was too busy destroying undead to cast them).
Just wanted to share this