Record Cleaning Machine - Loricraft PRC-3 vs. 4?

I have the PRC-3 and have been very happy with it. I have never regretted not going for the PRC-4. The PRC-3 is a great machine with plenty of power.

I've got the PRC-4. Never compared it to the 3, but I'm delighted with it. Silent enough and does remove all fluid on the disk. Maybe someone who owns the 3 can comment on it. Feel free to ask any question.

Tough question. I wrestled with the same until I found a used PRC-4 Delux and bought it. They are great machines and with the right fluids, extremely effective.

 
I have a PRC-3 and its works fine; the 4 also does the job well. You won't go wrong with either.

The key to getting records clean is not the difference in strength of the vacuum pump between the PRC-3 and the PRC-4.

The key to getting records clean is:
* the fluid used (AIVS for me),
* fluid application technique (brush lightly, don't scrub),
* most impt. the amount of time the fluid is on the record,
* and lastly, a pure water rinse.
 

Thanks for all the helpful responses.
Both the PRC-3 and PRC-4 look like very good options, and it is not a question of one being inferior to the other, but rather if one really offers any significant advantages in practice?
It sounds like other steps in the cleaning process are equally important considerations, and unrelated to a particular Loricraft model choice.
I am sure that most users would be happy with either one.