Bambu released the P2S as the P1S's successor and kept the P1S on sale: it prints faster and takes twice as many AMS units (up to 8 with 20 slots vs 4 on the P1S; both run the AMS 2 Pro and AMS HT). Pricing has since flipped the order. The P1S sells for $369, $180 under the P2S, which makes the P1S the budget buy and the P2S the performance buy. If the newer motion system and the extra AMS capacity matter to you, that $180 is well spent.
Both printers share the same build volume and enclosure philosophy. Neither has Lidar. The X1C had it, but Bambu ended X1C production on March 31, 2026, and new units are down to leftover distributor stock. For engineering materials, look at the X2D or the H2S instead.