Anna - sounds like you've done great! We too noticed the huge difference it made - amazing when you get your happy child back :)

Don't feel embarrassed to have two children the same - there is def a genetic factor in it all, as well as random chance. I'll definitely be on the watch for it again if we are lucky enough ever to have another child :)

Other things I noticed (which aren't signs in themselves, but add up together) were comfort sucking for ages with feeding/taking ages to feed (def not the 10 mins/side). He also couldn't stand being on his tummy. And getting him to sleep he'd start falling asleep on our shoulder, then suddenly jerk awake and start screaming again (and repeat....).

As a note, then pediatrician who prescribed the reflux meds only did so to 'shut up' the first time mum, and he also spoke poorly of diet changes - so it really is a case of fighting to get help when you as a mum know there is something wrong. We also tried gripe water and infacol, but neither helped in our case. There is a thread in the Wisdom Wednesday forum on colic/reflux where a couple of mums recommend another more natural product I've never heard of before that they swear by, so could be another good thing to try? We didn't want to medicate, but when everything else failed we did, and it really saved our lives (went from 4 hrs of broken sleep each night to a good 7 hrs sleep in 3 hr blocks!, plus got our happy child back).

Diet-wise, our son did not have nice yellow mustard seed type poo, which was also a huge indication that he was reacting to my diet. I don't know if your sons poo is nice smelling or not? If it isn't reasonable, I guess you could try changing formula? 

I hear you on the lack of breastfeeding help. My son wouldn't latch to start with, though after I held him on me to sleep I got him to feed after that. Though ended up with a cracked nipple that got very bad thrush in it which caused agony when I fed until I took the thrush tablet to sort it out (you can't use cream like they say when I gets inside the milk ducts, and while the tablet is not prescribed, they do give it to aids babies who are born with thrush throughout their systems, so I figure it's pretty safe!) With bad thrush the symptoms is basically hair-pulling pain to start with, that slowly eases over the feed.

If you're not enjoying breastfeeding though, you shouldn't feel bad about formula feeding - just snuggle him close to feed and it doesn't make that much difference :) 

Also - don't know what type of bouncer you have tried, but I found my son only liked the really basic mesh ones (baby factory sell them) - they're more verticle so nicer on tummies, and really easy for them to jiggle themselves by kicking their legs - they look really plain compared to the 'fancy' ones, but are really, really good!