The Loricraft "Upgrades" ( ---> Price) are mainly in finish, Dust cover and power of the pump. All of them do the job but normally you will keep the unit for a long time, so it makes sense to invest in the more powerful model. The pump is simply better quality. PRC3 was available 2003 (or earlier?).
Record Cleaning Machine - Loricraft PRC-3 vs. 4?
The Loricraft record cleaning machines look very promising, using a small point vacuum as opposed to a vacuum slot.
The PRC-4 has a stronger vacuum pump compared to the PRC-3, but is it really a significantly better choice in practice? (the difference in price, amortized over years of use and 1000's of cleanings, is less of a concern).
The PRC-4 has a stronger vacuum pump compared to the PRC-3, but is it really a significantly better choice in practice? (the difference in price, amortized over years of use and 1000's of cleanings, is less of a concern).