I have a 1991 300SL with about 110K miles. No major problems until about 105K when the smog pump failed. I wouldn't hesitate to drive your car since you have maintened it well. But, since the older 129's are worth so little in dollar terms, why not keep the 1991 and buy yourself the newer car for your travels? I personnaly prefer the looks of the 129's over the 230's.

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