Generally speaking, wifi is better than bluetooth, as it does not use any compression, while bluetooth uses a codec (code/decode) which results in more or less lossy compression, depending on the actual codec used (SBC, aptx or aptxHD) by the device. Bear in mind that if two paired devices use different codecs, the more "lossy" one prevails. So, if you have access to wifi, your streaming will sound better on a good high resolution device such as the R3 than with bluetooth.
Thanks, I’m considering the ap60 pro on massdrop over the r3 as well... guess I’ll have to get both