You will be encouraged / directed to use the lounge nearest to your departure gate. 2 hours between flights will shrink to just over 1 once you have allowed for getting off, clearing security and boarding. Thee are lots of threads discussing the differences between lounges but to be honest I'd be heading for the recommended one, getting a shower and getting on the next plane. In general they are all OK - and all get better the further you walk from the entrance as everyone seems to use the first food area leaving the rest of the lounge much quieter.