For me, it's between Phantasialand and Liseberg.
Europa just can't quite cut it as it's lacking in thrill rides, three thrill rides (Wodan, Silver Star and Blue Fire) amongst a whole host of family rides is unbalanced to me (still love the place though!).
Generally start with a warm up coaster (using Liseberg as an example, like Lisebergbanan) then head to something good (like Helix/Valkyria). Hit up all the good creds/water/flat rides in a logical order geographically around the park then re-ride all the biggies.
Love hearing first time reactions to Liseberg. Gorgeous little park. I was there the weekend before (judging from your 'pay day' comment) and it was pretty rammed too. The Sunday was muuuuuuch more civilised.
Valkyria- really great coaster, views from the top of the lift hill are awesome but those god damn vest restraints... they don’t lock but you still lose any decent airtime.
Themeing is fab, great soundtrack and some nice subtly projection mapping in the station.
Was extra special at night as...