I'd first look to see which pedal Wellgo copied. (Wellgo in Taiwan, also labeled as Performance, Nashbar and probably a few others.) To me, seeing Wellgo copy a model tells me that Wellgo considers that pedal is worth something. Also that the pedal or the quite worthy Wellco copies will be around a long time as well as the cleats. (Black LOOK Delta compatible cleats are still around, thanks to Wellgo and I cannot tell any difference between the LOOK and the copies outside the fairly recent addition of walking patches on the cleats. I always walk in the covers so that makes no difference.)

Edit: Some of us cannot have float. For us, cleats like the Deltas are a real blessing. (Shimano came up with the SPD-SL I'm quite sure in part because a certain Shimano sponsored racer would not use any Shimano pedals on his bikes, favoring the LOOKs with the black cleats instead. He switched over when Shimano made a pedal that did the same thing.)