There is no such thing as a consensus on 'which caps work best'. It depends entirely on the nipples. You use the one that fits best.
Caps are NOT interchangeable. CCI NO. 10's are NOT the same size as Remington No. 10's. CCI No. 11's are NOT the same size as Remington No. 11's. And RWS No. 1075's are not the same size as any of the other 4.
Saying that one particular brand and size is 'the best' says that brand and size fits all the nipples there are, and that's simply not true. Nipples vary in size from gun to gun; you may get a run of the same size nipples on several examples of a given brand and model, but even two examples of the same brand and model may very well have different nipples if they're made a few years apart. Add to that the variety of aftermarket nipples available, and the fact that there is no standard (other than thread size) for nipple and cap design and the result is essentially chaos.
Buy some, try them, if they don't fit, buy some other ones.
Averages of at least 20 samples of each brand and size:
