I run a squad of GK Term, with a grand master in my Vanilla codex, legion of the damned army. I believe they are superior to normal terminators. With all of the special rules (check the dameon hunters codex), wargear you can give the Grandmaster, and having 3 attacks each all the time with S6 power weapon, Grandmaster has 5 with S6 FORCE WEAPON and also having the ability to premeasure your shooting (targeter), as well as all having WS 5, ALL of this for 6 points more per model....yeah right. I run a Term. chaplain with a thunder hammer and crozius in with that squad as well. Pricey however, re-rolling all those to hits, as well as if you are the enemy, choosing what to attack, the GM, the Term, or the Chapl., then when the Chaplain strikes, if the thing is still alive some-how, he is now at (I) 1. I also, sad to say, run them in a LR Crusader (lots of points). So far, this squad is pricey, however VERY effective. Practically invincible to psychic powers (special rule as well as look at Unguents of Warding in the wargear section), and have a heavy weapon that ignores inv. save., cover save, and is AP 4. I use the incinerator, deep strike next to harliquens, farseers, or warlocks. Good bye, you get no save.