Have you tasted the R55-22? Why did you choose to plant that one ? Just curious- I also planted that out recently.
As far as a new planting, I would wait and plant out something that you have personally tried and like the most. There are going to be personal preferences in regards to flavor. There are also other factors such as size, ease of cleaning, latex level, color, etc.
We have some feedback from forum members regarding the quality of the jacks you mention.
Rob highly backs the Excalibur varieties, including new ones such as Excalibur Gold, Excalibur Red, etc. with some support from Sheehan. Other than that, we have very little end user opinion on the newer Excalibur varieties. The "older" Excalibur varieties such as the Mai's, Bangkok Lemon, Red morning, etc are well regarded by others as top end Jacks.
We have basically no evaluations of the newer PIN varieties as far as I know...
Black Gold x Tabouey is offered grafted by PIN. The only one I have tasted however is from Harry's seedling which may or may not be very similar to the grafted version. The seedling Harry has IMO is excellent, although is somewhat variable and not always at the top of its game.
J-31 I've eaten a seedling version which was very good
If we look at past experience with mango ratings on this forum, we find that most mango fanatics are in line with the flavor evaluations posted by Rob. Many here do not agree with mango ratings given by PIN. Given that, I tend to believe Rob when he gives an evaluation on fruit quality. I don't think you would be wrong to go with one of his recommendations.
If you have a lot of room, and plan on planting a number of trees, then choosing a few of the recommended and or new varieties may be a good plan ( I did it - I have a few planted out that I have never tried).
Thanks for the detailed write up. I haven't tasted the RS-22 (the tag said RST-22, but I saw some others with the R55-22 tag) I just bought it because I wanted to plant one of the new PIN varieties but didn't want to plant something called orange crush or canteloupe. I've tasted a few seedling jacks and a few named cultivars and while they all have different flavors there's not a huge difference to me. I'm also the type of gardener that cares more about seeing plants progress than getting fruit. I haven't tasted any of the red ones though so I'll plant one out and see how it does.