Re: Are there any real differences between higher and lower priced Prestiges?
in my point of view, there are no significant different of quality between RG1XXX series to RG 2XXX.
Same prestige line, same material, but RG 2XXX got Dimarzio made pickups, some inlays, fancy finishes, maybe fretbaord binding. That's all.
With installing the Dimarzio on your 1570 of course make your guitar at the same league as the RG 2XXX. But we must admit that those inlay and binding works must added some cost to the selling price, but not making it at 'higher level'.
on the other hand, RG3XXX has super wizard neck and real dimarzio pickups, inlays and binding might be the same with RG 2XXX.
I can't say this is 'better' in quality, but obviously people praised the super wizard neck, so it makes the RG3xxx is in more 'respectable' level.
based on my experience in buying and selling stuffs, putting a real dimarzio to some guitar won't increase the value too much.
buyer will see it as a bonus and more reason to buy it from you. but pricewise ? they will expect the street value of an used RG 1570.