So why don't you just try both Galleries Club and you'll have 'done' all the T5A lounges? I never understand why people start these threads. Try both and make up your own mind - and experience it all first hand. Seems the only logical thing to me! I can't imagine you plan to turn up 40 minutes before departure just to grab a quick coffee, so I'm sure the lounge experience is part of your plan and time won't be a factor!

BTW I can't believe you booked Charles de Gash instead of LIS - so you obviously ignore good advice given to you in threads anyway

Seriously, try both lounges and have a nice trip ^