Jammy we have trouble at nights too. I think it's their age. Have a look at the mumsnet development guide, it seems that they are going through a 'significant' part of their development atm.
DS1 is a stroppy bugger atm.
I am not a nice mother though and just tell him to shut up and go to bed.
Daisy, that's bollocks about your phone.
DS2 doesn't have reflux, he is a happy hurler!
He eats, then he is burped, but many times we won't get all the wind up and we don't realise, and he asks for more food so we give it, and then afterwards he does a little chirrup and out it comes, out of his mouth and nose exorcist-style, all over my phone, the wall, me, the dog, etc.
When he is not doing that fabulous projectile, it just flows out fairly freely while he is happy.
I am not worried about weight gain though obviously
he's just a puke monster, but compared to DS1 who had colic and reflux, he's a breeze!