Jamg03s

I've been there 3 times. Last time was a year and a half ago. Compared to other options, it's a dirty one. If cleaning is not a big issue for you, then you might enjoy it. It has a great location and if you come at the right time it will have a nice young local crowd. It does have the rep of being a bit Asian to Asian sauna which in your case is not a problem. But also for me, a white guy, that place was fun. Dirty, but fun. 
In my opinion, if you have some patience for a long taxi drive, Chakran, which I attended last night is WAY better in terms of crowd and cleanliness. It is also a more Asian to Asian sauna. 

Thanks to everyone for the information regarding the different massage shops in the area (shout-out to DivineMadman for that super helpful guide!).
Anyone have any experience specifically with Ganymede or VCK? The guys there seem more of my type. Thanks!

I and a few others have previously reported on Ganymede.  It should be searchable here.  It's a nice friendly place.  Small selection of guys.  shared bathroom/shower down the hall.  massage tables.  VCK obvs is much larger.   General positive in my view.
You can book ahead at both places using their daily Line blast, or just show up and pick 20-30+ guys on the "stage" at VCK, or the 4-8 guys who emerge from behind the curtain at Ganymede and stand 3 feet away from you.  Personally, 9 times out of 10 nowadays I book ahead based on photos.  I am comfortable doing that.  Not everyone is.  I know a lot of people like the "is he smiling at me?" test - which only works for live selection, so the sheer numbers of guys at VCK works in your favor.  Whatever works for you.  The guys at the massage shops know that some people are looking for the smile.  Without a doubt one of the best massage experiences I have ever had was with a guy who was not looking/smiling at me.  Go figure.
For one hour oil it looks the minimum tip at VCK is 1,500 and at Prince it's 1,000.  1,000-1,200 is pretty much normal, for Bangkok, for higher-end full-service shops for the tourist crowd.)  I think I saw Sabaidee Spa recently raised their minimum tips.  They might be the same as VCK now.  VCK has some real superstars.  
My current approach is very much to book the massage with a particular guy.  Sometimes they are guys I've had before and liked.  Other times they are just particular guys I am obsessed with.  As a result, if there's a guy at VCK I want to have, I am willing to pay the extra.  That extra 500 baht is more than I spend on food for a day (often for two days), but I'm not booking massages every day.  So I'm not upset that I could get a massage /sex for a bit less someplace else.  I'm booking this particular guy.  
I used to be big fan of Prince, nowadays less so.  One major issue for me at Prince is there may be 30 guys there, but only 3 gay/bottoms or "do everything" guys.  Once I went there and there were NONE.  VCK has a lot more gay "do everything" guys, including many of their stars.  I also think the management at VCK is better than the non-management at Prince.  
But none of it matters.  It all depends on the particular masseur and how he works with you, wherever he may be.  For me the experiences end up being very personal, so if I'm happy with the experience overall -- as I am 85% of the time - then that's good enough for me.  I don't torture myself with "oh, but I could have had that experience across town for 500 baht less", because I couldn't.  My experience is with the particular masseur at that shop.  
 

Hello all!
New guy posting but really appreciate all of the information collected here! I’m going to be Bangkok temporarily for the month of May and haven’t been out in the gay scene there before. Wanted to see if anyone was wanting to meet up and explore/show me around/show me the ropes/etc.? I am originally from CA, 28yo Asian.
Hit me up! Thanks!