Stefano Ricci is higher quality than Brunello and in the same league as Loro. They are the Patek and AP of high luxury fashion. LV is the Rolex in the rank.
I have both...It really depends on the fabric. Each model is different but Brunello Cucinelli quality is a bit better IMO. I have their Vicuna, cashmere, polo, and down to their polyester. However, Brioni suits smoke both of these brands by miles.