Never been through LHR before, successfully avoided it to date. However, will be transiting IAH-LHR on CO, then LHR-BRU on SN. Which lounge is the better? I assume the PClub is in term 4 with CO, but it appears there are several lounges in Term 1 for *G/BusinessFirst ticket users. I have about 4 hours layover.

Suggestions?