I am looking to re-power my 18ft mirrocraft cc. I am looking at new engines and reconditioned. The price of reconditioned engines makes me take a serious look but how long does the typical reconditioned engine last? I am looking at a 96 125 merc and 91 100 merc reconditioned. They only come with a 30 day warranty.....not all that great.... My new option is a 90 tldi. Any opinions? The reconditioned engines cost half as much as the new engine... As always, thanks for the help...