Wow! I'm floored. I have a wide variety of snare drums. I believe 5 of them are Gretsch: Two 5x14 RBs, one in duco lacquer, one in green glass wrap, a 6.5x14 from around 1940 with rocket lugs in gold sparkle, a mahogany marching snare 10x14 and a reissue COB 5x15. All of the drums have great character and are very playable. I've got snares from all the vintage American drum companies (and a couple of non US) and I can't find a stinker in the bunch. My list includues:
Slingerland single ply radio king 50s
Ludwig Pioneer, 50s lacquer finish wiith NOB hardware
Ludwig & Ludwig wood from the 30s
Leedy & Ludwig wood from the early 50s
Rogers 1980 Big R wood Dyno
Rogers Holiday
Rogers Power Tone
Noble & Cooley 7x14 single ply
Ayotte 6.5x14 wood hoop
Trick 5x14
Pearl 3.5x14 brass free float
Trixon Telstar (two different head sizes)
Premier 4x13 Birch
Spaun 5x13 vented acrylic
2 Camco 5x14s 1 tuxedo 1 aristocrat
I'm sure I'm forgetting some. But I truly believe that unless a drum is just broken, you can tune it and make some great music with it.
All of these drums sound really good. 42 strand wires are an option, I think a pretty cool one if you like to mix a lot of buzz rolls into your playing and if you want to go for a raunchier, looser back beat sound for a New Orleans vibe. I use lots of different snare wire counts.
I do prefer die cast rims but triple flanged are cool two.
Of course the "Great Gretsch Sound" is marketing, it's not a quote. I think their toms sound fine. I have a 3 ply 13 that is especially tunable but all the rack and floor toms I have sound great, but did need to have their edges cut. I've found the kicks to be quite full sounding. I think heads tend to fit these drums on the tight side, so I would recommend trying them with Aquarian American Vintage heads for a better fit.
I will mention that my first snare drum was a 5x14 RB in BDP. I was a teenager and I had the snare sounds from recorded music in my head and I couldn't figure out why this snare didn't sound that way. I sold it and played a Ludwig 400 for years. As I got older I bought more snares and got better at tuning and got more attuned to having a unique sound and became more flexible in my sound requirements. So now, as I said, a snare would have to be down right defective for me not to be able to get a musical sound out of it.
My 5 cents worth.
Gary