Read this ~
http://www.indianringneck.com/bluffing/
I think that in most circumstances IRN can be worked with as a hand tame companion parrot but overall they aren't a very hands on species at all, which is why I recommended Alexandrine parakeets

they're typically more gentle, more laid back and more hands on. Neither species commonly like to be pet, but an Alex will prefer to hang out with you. I have had both, and my Alexandrines are completely different. I've not been bitten by one, even though their beaks are daunting don't let it put you off them. When they get mad they give you plenty of warning and they kinda bop your hand with their beak as opposed to biting you. My ringneck would bite

don't get me wrong, I'd love another ringneck, but they can be so different. Usually they're super tame and sweet or hands off and grumpy
I understand what you mean about cockatiels. They're not thought of that much by people looking for parrots but they are really, really sweet companion parrots for the most part. I hand raised Harvey and he is as sweet as sweet can be. So cuddly and gentle. He throws little hissy fits but he doesn't bite

I do recommend them more than anything else but obviously if you want a step up from them then don't look into them. They're over-looked by many
I think conures are WAY easier than Indian ringnecks. And IRN can also have a very loud call too! Watch this
Indian Ringneck Screaming - YouTube
I'd say the only difference between that and a sun conure scream is the shrillness. But both can be extremely high pitched and loud. The Pyrrhura family of conures are typically quieter, these include the green cheeks, maroon bellied, pearly, painted, blue throated, crimson bellied etc. Huge family!
I will add also that Indian ringnecks and conures absolutely hate other birds and budgies tend to become cocky around them so always, always keep an eye on them. Spudgy would try and bug Dexter and Pickles all the time and then fly away swiftly before he was bit