LS swap spark plugs. what have you had good experiences with?

[doktor b]

as the title states, i'm looking for input on plugs.
i put TR5IXs in the car originally, but my tuner recommends TR55s. so it'll be tuned on the TR55s next week, but i'm curious what you all have had good luck with.

5.3 LM4 aluminum block
port/polished 862 heads milled .030" for 10.5:1 CR
LS1 sized valves
LS6 intake manifold
cam motion spec'd & cut cam. .595"/.578" lift, 226/234 duration, 114 LSA
other junk that doesn't really matter much.

[sdobart]

TR55 is the right plug for that combo.