I am looking at buying my first sailboat and have been researching different models in the 27-30'' range. I recently looked at two...a 1983 27'' Cal Mark III with a 7.5hp inboard deisel and a 1981 Catalina 27'' with a 12 hp inboard deisel. Both are in excellent shape with a good sail inventory and electronics packages. Would anyone have any opinions on either models on the pros and cons of each. Thanks.