I've read in some forums that CU24 PRS of 2008-2009-2010 are not so good as 2011 or past PRS. It can be true?
Okay, I think I know where you heard this. Until 2007, PRS used solid mother-of-pearl bird inlays on their fretboards. Mother-of-pearl is becoming more difficult to find because it is used for guitars and jewelry and things like that. So in 2008, PRS changed the design of the birds to just an outline of the bird shape, in order to use less of the material. I believe they changed the inlays again in 2009, and in 2010 for the 25th Anniversary models they used some synthetic materials that most folks don't think look as good. This is probably why you hear people say "past PRS" are better than the 2008-2009-2010 models. But these are only cosmetic details and they do not make a difference in the sound of the guitar.
Also, in 2011 the CU24 was redesigned. The 5-way rotary switch was changed to a 5-way blade switch, similar to the switch on a Stratocaster. The guitar also got new pickups that are more vintage-sounding, and the neck shapes were altered slightly. Many people think these design changes are improvements, which is why they say the 2008-2009-2010 models are not as good as 2011 and later.
However, I will tell you that I own a 2008 Cu24 and it is my favorite guitar I've ever owned. I like the outlined bird inlays and the old rotary switch and the original wide-thin neck shape.
If you find a guitar that you like, then these things really don't matter.
I've also read that production until 95 is better. But, after 91, fongerboards are no more brazilian. And, ok those are pre CNC years, but from 91 to 95 PRS aren't handmade, but they are made in a factory using Duplicarves, isn'it? But I think that CNC is better than Duplicarver, or I go wrong?
I think PRS used duplicarvers until 95, when they switched to CNC. A duplicarver is a big device with a cutting tool and a guide set side-by-side. As a person pushes the device around, the guide runs over a mold of the guitar body while the cutting tool cuts a new guitar body from a block of wood right next to the mold.
A CNC machine is computer-controlled. It holds a 3d model of the guitar body in its memory, and is programmed to cut the guitar body shape to match that.
Both methods make a copy of an existing design. I think the CNC is better because it is a little more precise. However, some people say that the duplicarver is closer to building a "handmade" guitar because a person is operating it instead of a computer, and that's why they say "production until 95 is better." However, the people who say that are usually smaller guitar builders who are trying to sell you on the idea that their "handmade" guitar is better than a PRS.
Again, I have a 2008 Cu24 and I think it's better than those older guitars.
Maybe woods used from 91 to 95 are better?
The PRS website has a video tour of their factory here:
http://www.prsguitars.com/detail/
If you click on "Wood Shop - Neck Team" you can watch a video on how PRS selects and prepares the wood before it is made into a guitar. I highly recommend you watch this to see how much work goes into selecting, drying, and preparing the wood in a PRS guitar. No other guitar maker is as methodical as PRS when it comes to this, and I believe it is what sets PRS apart from everyone else.
I believe that the wood PRS is using today is better than the wood they were using in 91 to 95 because of this process. But as others have said here, a good guitar is a good guitar, regardless of what year it was made.
