Hi

Both brands are great. I use both.

Festo - fittings are slightly smaller, fuel manual valve is also smaller, y and T barbed fittings are great

smc - PU tube is better and as wider colour choice, flow regulators are great, pressure gauges are smaller than Festo (15mm), air filters, no barbed fittings avalable


So depending on use, both brands are great

BR

Nuno