Hi! I've just subscribed to the forum and I am quite interested to this topic too (it is going to be a long post!

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Me and my girlfriend are both working and live in a flat and are looking to get a nice little parrot to keep us company, but we want to make sure we are ready and do the right thing without rushing on such a delicate thing like a pet, a living thing!
Because of the flat, we started looking for a specie that is less loud than the others (the flat is sound proofed, but a highly noisy pet could still be a bit of a problem).
Also we would like it to be cuddly... so we narrowed down to cockatiel

and green cheek conure

.
We also have checked all we could about behaviour and pros/cons of both, which I could summarize as (correct if I am wrong):
Cockatiel has a more balanced behaviour than the gcc, he is a balanced parrot overall that plays with everyone. The gcc though has the potential of giving more satisfactions on the playing/learning bit, but could get nippy if not trained properly. He is also less scared of things, so can be handled more than the cockatiel (if trained again).
Cockatiel male is more vocal than gcc, he likes to sing too. Gcc has more the behaviour of a large parrot in the body of a small one.
Cockatiel do have a sort of white dust they produce, for someone with allergies it might be a thing to consider. A water spray can be used to "wash" them once or twice a week.
Someone says the gcc can be louder than cockatiel, but some others don't (that confuses me).
Life span is about 15/20 years for cockatiel and 25/30 years for gcc.
Now, the questions...
First, the noise. Is it true that gcc is noisier than the cockatiel? I tried looking at youtube videos but it seems just a different noise, it doesn't seem to be much louder...
I know that cockatiels require AT LEAST 10/20 minutes twice a day to spend together, which would be absolutely fine, in the evening we can do more than that. How about the gcc? Is it usually more demanding? Would it be manageable with the time we have got?
When going on holiday... what do you guys usually do? I am not planning to go away more than 2 maximum 3 full weeks a year. I have looked into services to help on that, just to check how it works, and it seems some can do water/food change twice a day at your house, some other can board small pets... But still is there any better option for when you go on holiday, are these good already?
And last thing... your impressions on both
