Your Opinion/Advice Please!

Your Opinion/Advice Please - '02 CLK 320 vs. '05 or '06 C230!

I'm a M-B convert! Thought they were big and sedate (70's) and then rode in a newer model recently and fell in love. Drove an '06 C230, 30K mi at a private dealership and it was awesome! Found an '02 CLK 320 Cabriolet Firemist red at M-B dealership -- gorgeous, inside and out (57,727 mi)! Love the luxurious interior, convertible, tight ride, & little larger back seat of the CLK combined with sport (space concerns because have two children-already own a minivan so we can get this smaller sport model!). Just wonder how wise it is to buy a seven year old car vs. a younger model of a slightly lesser level of car (CLK is 1000 lbs heavier). The older model is a much more expensive car originally, and belief is M-B is a good solid car that lasts. Before 50K mi, '02 was certified pre-owned. Have 'champagne taste and beer budget'! Would love to hear other's thoughts!