I personally would suggest Garmin pedals because they can be easily moved from training bike to race bike to indoor trainer to spin bike even... across SRAM, Shimano, and Campy.... because they use the only interface that is still standard in the entire modern cycling universe.... 9/16 LH and RH threads.

Note: This is not what I personally use. I have crank based power meters. And I find the migration from GXP/Hollowtech to BB30 to BB86/PF30/wtf ever to be maddening. Also the inability to just swap full size 53/39 vs compact 50/34 vs cyclocross 46/36 is another aggravation. However, I don't plan to move away from crank based power meters at this time. In fact I may be picking up a 3rd one for a climbing specific build.

But for the money, Garmin pedals seem to offer the best combination of real measurement and flexibility / compatibility with wildly all over the map groupset standards.