Just joined the forum because I found this thread. Hi!
I have an L5 Studio and it sounds great. It has a little bit less of that archtop 'thunk' sound that laminate tops have, e.g. the 175. In my experience it sounds slightly more metallic and electric unless you roll the volume and tone way back. I have never played the L5 CES etc.
I found the dot inlays tacky and had them redone for a couple hundred dollars:
Gibson L5 Studio | crystalmountain
I did not buy it; it was a graduation present from my folks. I only use it with the bridge pickup with the volume rolled way back to 3 or 4, through a Fender blues junior, and I like the sound I get. A friend has an old 175 and he plays with his fingers through better amps, so it is hard to compare styles, but if I were buying an archtop on a budget I would probably spend more money to get a used 175 over my studio. IMO the carve top does not mean the holy grail of tone. But the studio is a great guitar.
I agree some of the models look tacky. Not mine, IMO, but I don't think it looks as good as the 175.