I just wanted to add my 2 cents (or $5 Canadian).
I have done a few CPR swaps and generally I think their product is pretty good over all (once you get past the waiting), my only complaints has to do with the dimpling (missing or not located correctly). Just recently finished up a Skateball and had to drill probably 10% of the holes (well I do them all to prevent chipping) but some where missing. Some holes where there, but they where just covered with the layers of ink. These still could be found using the original PF as a reference and a strong light as I could see a very slight divot in the ink. One also has to be careful on the backside with any assemblies that pass through the PF (drop targets) as sometime the dimples can be off and if you install the unit following the holes it could be off enough that the targets/etc rub of the wood.
But these are things I have encountered before and have learned the hard way, but could be frustrating if it is your first time and are not aware of these things - but generally things usually go well out of the box.
As for overlays, I would not buy the ones I have seen that are being sold on eBay. Sure maybe better than nothing, but IMHO, it is lame (cheesy?) with the wood grain printed. I have done my own self made overlays in the past (Playboy for example as the PF, at the time, was not available yet) - but I only have the artwork printed and allow the original wood to show. Flash Gordon was another self-created overlay. Please note: these are not for sale as I don't own any rights and were done as a one off (sorry).
Also just a quick comment on Microplay PF - I have yet to see one so can not comment on the quality, but my opinion is the price. Wow, these are a lot more expensive than a screened CPR PF. I would be hard pressed to pay an extra US$400 on average. Now I don't know the reason, but will just leave it at that.
I think it is a good option for CPR to move to digital and for them to offer out of print PFs once again as an on "demand" service, as it will help those people that end up with a machine after a run has long sold out. Maybe not for the purists, but for those that just want to play their game without a blown out playfield, it is a great option.