vintage belts from SDP

[kaszal]

I bought some replacement rear belts for my Procat from www.sdp-si.com

part No. A 6B16M071060

These are the same pitch (MXL) and nearly the same number of teeth (71 instead of 72) but a little wider (6mm instead of 5mm) and made in urethane with kevlar reinforcement. The tooth profile also looks a little different (new ones are grey). They only cost $3.34 for a pair.

Do you think these will be better, like the BRP orange front belt is better than the kit rubber belt?