i want to buy a used 29 to 32 ft performance boat(2000 to 2003) and not sure which way to go as fa as engines ,i am sure its an old question but what is the best way to go ....single engine with big HP or twin with normal HP advantages with weight gain versus HP ,handling etc i just want to run low 70 s.any recomendations ?

Here we go...

But if you are int he 29-32 ft range, twins are the only way to go IMO.

agreed!! had a 28 big hp single for about 4 months. great boat dont get me wrong but i like the twins way better. the dependability with stock 502 mags in unbelieveable. the extra weight makes it handle incredible in rough water. drive both before you make a decision. my .02

If it has to run in the 70s you can find a 29 or 30 with a single 500efi or 525efi that will be very dependable and get you to the speed you want. Half the maintenance and gas.

You also can't argue with that logic either.

Once you have owned a boat with twin engines you will never own another single engine boat. The docking and manuverability with twins is worth the price of admission. I currently have a 27' Hallett with twin Mercruiser Scorpion 377" small block Chevys. It uses less gas than the same boat with a single big block would use. My average fuel burn is 8-12 gph.
My $0.02

You just can't idle back to shore/trailer with one if it breaks!

Where are you boating?

Do you have a 1/2 ton or 3/4 -1 ton tow vehicle. Do you tow it or keep it at a dock?

My boat is close to '32 LOA and runs uppers 70's w/525efi.

The only reason I would prefer twins is the reliability.

If were talking about inboards a single engine with big horsepower, easier to work on and less fuel use so you can cruise around all day without breaking the bank. Just my opinion