I have a small flock of 4 adult hens and just bought another 12 chicks. These guys are NOT great production birds... they are ornamental and fancy... I have black, white, partridge, and buff adults. Show quality of the standard colors are around 7 bucks for breeder quality chicks. I recently bought some of the fancy colors, Porcelains ran about 15 a chick... and for self blue (gasp) $30... I only have one of them, and she appears smaller than my others and not quiet as bright eyed and active as the others... the last blue I hatched myself failed to thrive, and I'm not sure if this is just that they need more development as a color type or just bad luck on my part...
Silkies have endearing personalities... and they may not do well in a mixed flocked, as they look different and other birds sometimes pick on them... The don't need a large pen though, but it's best if they don't have to fly or hop up far to reach it... Silkies not roost, they cannot fly... so if they are in a house with others that do roost, they may get pooped on... as a flock on their own they will sleep in a pile which is so flippin' cute! These hens are wonderful moms... I have even grafted non-broody silkie hens to my red star chicks... They do a great job rearing them, and are more attentive moms than most other breeds, so my survival rates on grafted chicks have been really high with using these ones as mommas... They don't seem to get bored with the job like some other breeds.
Young birds will need some attention as they are a bit more delicate than other breeds, the time spent caring for them is rewarded with friendly well bonded chickens... Kids LOVE them, easy to catch, soft to hold, and rarely struggle. If you are looking for egg production, these are not for you... if you want great personalities and a positive experience for kids raising chickens or first time chicken enthusiast... then this is the breed. Overall, I rated them 4 stars, just because they don't lay well, tend towards broodiness, and I originally got chickens for their eggs... But they have so many other great qualities.... so in the end it depends on what you want... I enjoy them more than most of my chickens.
A word to the wise... get GOOD breeder quality stock.. they difference in the look and appeal of breeder quality is worlds apart from what you may find in your local swap.