I'd buy an RCBS mould any day over almost any maker except for SAECO. I've had a great relationship with SAECO as well. All my Lyman purchases are done as the earlier "Ideal" marked moulds, I'm really developing a "thing" for early Ideal single cavity moulds. I buy the unvented ones whenever possible, but rarely cast with them. I just got a cool 452460 that has a totally different from the ones seen in all the pictures. Its also obviously completely original as well. Little victories. Sadly, my least favorite is an early H&G 68 2 cavity. They must have been drinking that day.