I have six Linnies. I'm a medium sized bird person (we have greys, Ekkies, Rosies, and Amazons) but when I met my first Linnie in person, I was in love! They kind of do that to you! They are VERY ADDICTIVE! We had 12 at one point but have lost a few over the years, some to illness, some to very dumb mistakes. Their nails grow very, very fast and you have to be very cognizant of that and the toys you give them because they love to play and can easily get stuck in rope toys. Ours are all fully flighted and share a cage together. They are definitely the most flock oriented parrots I have ever met and I highly suggest getting them in pairs. They are so much fun to watch because their antics are nothing short of better than any TV program ever could be!
They are just such cute little balls of feathers. I just can't think of anything negative to say about them other than the few minor things that other people have mentioned...the nails do need to be watched and any toys made out of rope that they can get tangled in. They do seem to be hand shy but that does not stop them from wanting to spend time with you and be on you, it just may mean that they don't necessarily want you to hold them. They are incredibly inquisitive. One other minor bit of caution...they love to burrow and when they are out, you have to be careful about anything you leave out, such as blankets and pillows on the couches...they will go for small little spaces!