I'm less adventurous than you guys... only been shooting for 4 moths, so don't own any "classic".
My favourites are my Beeman P17 and HW45. The Beeman because it's so easy to shoot, and accurate. Bargain at £60. My HW45 because it's a beast, a beast to be tamed. Bought it secondhand at £140 (I think). Both are more fun and accurate than my CP-1, and my Desert Eagle. CP-1 is also accurate but the novelty is wearing off... the iron sight is terrible to adjust, shooting it with a 2x scope is too easy in my garage range. Desert Eagle is just a fun plinker, it does group in my indoor range, but the novelty of blowback is also wearing off.
Adrian