OK, well that really sounds like a pH problem. Stunted growth is the number one symptom from my experience. When mine slow down, I take pH readings.
All the cultivars you mentioned are decent. Stand outs for me are Chandler, good taste, very large berries. Needs help via pruning as it lacks vigor when older, not a big deal at all. Sunshine Blue is a winner, but may not be in your area? I would add Legacy as it has some SHB in it too, just for a possible pollinator. Well more than that it is a decent cultivar. Produces well, and is tolerant of late freezes.One fault is it is hard to tell when berries are ripe. Uneven ripening once blue they need a week, like most others, but with a long ripening period it’s hard to tell fully ripe from just turned blue. Others are green around the stem till fully ripe and easy to tell. Chandler is like this.
You mentioned large berries, others like that are Spartan an early season, and the best tasting early season type. Darrow has large berries as does Bonus. All decent. I researched those a lot, but have not tried them. I have my own want list. All mentioned, if I don’t have them are on it.
Cara’s Choice is the best tasting blueberry I have. It has beautiful blue-green leaves.
A smaller cultivar.
You have to do more than amend local soil, you need to remove it and put in a peat/pine bark mixture. Or all peat with pine bark mulch. You won’t really need sulfur if this is done. If you go for a mix, just use peat with local soil. Add sulfur too. Sulfur takes 6 months to work at least, sometimes a year. You will need to monitor all the time.
Another option is to throw in the towel and put something else there. Like Honeyberries and you won’t have to do any amendments. They are not very attractive bushes though. If hoping for some landscape value, they will not be that attractive.
Honeyberries don’t mind some shade. Best if they have some.
If you have some room other options are the Romance series cherries that grow about 6-8 feet tall and 6 feet wide.Juliet is the sweetest but best for cooking. These are fantastic top rate tart cherries. The best cherry pie you could possibly have I made jam, fantastic! I gave away a tree, so my production will be lower this year, I’ll make jam again. in 2018 I’ll have enough for many things. These are also very attractive plants in their round form, and beautiful bloom in the spring.