Performance to performance – straight out of Bass and Walleye Boats Magazine with 200 Opti, 200 E-Tec HO, 200 HPDI all on identically weighted Pantera Classics 1. Top Speed 75.2 mph – 200 HPDI (with 27″ Trophy and allowed to run above the 2005 recommended 5500 rpms, no longer applies to 2006 motors and beyond, 73.9 mph restricted to 5500 rpms) 74.5 mph – 200 E-Tec (with 28″ Raker II) 74 mph – 200 E-Tec (with 27″ Trophy) 73.9 mph – 200 Opti (with 27″ Trophy) 2. Acceleration I (0 – 30 mph) 6.74 sec – 200 HPDI (27″ Trophy) 7.49 sec – 200 Opti (27″ Trophy) 8.24 sec – 200 E-Tec (28″ Raker, no runs with the 27″ Trophy were recorded but certainly would have been better) 3. Acceleration II (40 – 60 mph) 6.8 sec – 200 Opti (27″ Trophy) 7.4 sec – 200 HPDI (27″ Trophy) 7.6 sec – 200 E-Tec (28″ Raker, no runs with the 27″ Trophy were recorded but most likely would have been better) 4. Fuel Economy (average mpg) 4.5 mpg – 200 Opti (27″ Trophy) 4.1 mpg – 200 HPDI & 200 E-Tec (both 27″ Trophy) 3.7 mpg – 200 E-Tec (28″ Raker) So, theres your performance numbers. Honesty, pretty close for all of them. However, there were other issues noted like the improved handling characteristics of the HPDI and E-Tec due to harder engine mounts over the standard Opti. As far as Im concerned, I think theyre all very close, and each has its strong points. Its too bad the E-Tec wasnt fully tested with the 27″ Trophy prop as that would have made the comparison as similar as possible. It seems it and the HPDI are torquier and have a little better power overall while the Opti spools up better (i.e. lighter flywheel and other reciprocating parts). With the combination of lower reciprocating weight and overall power, it is more fuel efficient. If they ever did make a 200 Opti Pro XS, I would think they would work on increasing overall power (not peak power, which is already maxed out at some particular rpm) while probably putting stiffer engine mounts and the Torque Master on the lower end, but from the sound of it, it doesnt seem that they are looking at that. Whichever way you go, make sure your mechanic you plan on servcing your rig is gung ho about your motor choice. That has a lot to do with it.