The stock baskets for the Bambino are pressured, so yes. From my experience you can't get a "good" shot out of the stock baskets (but even crappy beans with a crappy grind produce something passable as espressso).
They are not sending good baskets with the Bambino? The baskets on the Infuser are reasonably good, just a bit weird as they are a bit narrower on the base.
My Bambino (bought <1yr ago) came with both pressurized and non-pressurized baskets actually.
There's a whole wave of innovation on baskets right now - holes all the way to the edge, hole sizes and cutting methods, reducing the amount of flex under pressure, etc. Check out Lance Hedrick's YouTube channel.
I have but a humble delonghi dedica and the only upgrade I've done so far is with the basket. It's made quite a difference.