Another Siamese X fan here, I've had Burmese and Siamese crosses for thirty-odd years and have adored them all.
They've all been intelligent, very very affectionate and loyal. Yes vocal - and how!
Great hunters too - which isn't what everyone wants, but useful on a farm, perhaps.
They're a lot cheaper than the purebred ones, and have a lot of the benefits - intelligence, loyalty, etc - perhaps without the extremes of personality
A family who bred show Siameses had a litter to an accidental mating to the local moggy; I had a pair of the kittens and they ended up keeping one themselves. They then bred another litter the same way on purpose, because they said they'd never had a cat they liked as much as the one they kept on!
Whatever you decide you want, I wish you luck in your search / wait, and look forward to pics and stories when you get your puuscat