It's easier for me to play with a loose player, after a while a loose player becomes predictable, with a tight player everything is much more difficult. And the most difficult for me are aggressive players.
A mixture of both in my opinion, but if I only had to choose one, I'd prefer the loose player because he will try to be too aggressive which will lead to mistakes
Loose players! because they offer more oportunities to take advantage off.If I havent raised preflop for a long time a tight player folds ,a loose players is happy to have someone to play with and so am I.