Of the 737 variants I've flown, the -200 is by far the easiest to handle and the least upset by turbulence. Gusting severe crosswinds were easy to handle and the spool up time on the old Pratts was so quick compared to the modern CFM's and the like. The fact that they are now getting on in years does not mean they are becoming "dodgy", in fact, aside from the basic airframe, most components have probably been changed several times since they left good old Seattle anyway.
So I wouldn't worry too much if you experienced a bumpy landing, these things happen and you should enjoy the P&W noise, for soon they shall be no more than a distant memory (to those of us 73 drivers with hearing aids anyway!).