planned to subscribe streamyx in near future but my friend from same apartment but different unit have crap SNR of downstream 7.0 and up 6.8 for a 512kbps line..

does that mean that basically my future 4Mbps line will have crappier connection since we are both from the same exchange or I might have a better luck cos SNR differ widely from each unit even from same apartment??

besides, does unifi always have better SNR since optical fiber is less prone to interference and line attenuation??