Ristorante Pesto in Philly
I've never been to restaurante valentino, so I can't offer the comparison, but I've been to Pesto twice. I enjoyed it both times. I had the gnocci pesto the first time, with an assortment of apps and snickers cake, and a seafood pasta special the next time. Everything was wonderful.
Side note- for some reason you have to ask for sides with your entrees, or they won't be included.
I don't know Valentino, but I like Pesto a lot. They're a BYOB; they make their own fresh pasta, bread, salumeria, desserts (including gelato) and are very warm and down-to-earth. Reasonable prices and almost frighteningly clean. The outside isn't that inviting, but they are serious about food.
1915 S Broad St, Philadelphia, PA 19148