I'm debating if I should go single engine or twin in a new jet I've ordered. (Yak 130)

While it is nice to still be able to fly in an engine out situation, is the added cost and weight of two engines worth it?

is the sound of a bifurcated pipe horrible enough to justify twins

twice the the things can go wrong with two engines. So, are two really more reliable than one, ore do you double your chances of not getting to fly if you have to keep two engines running...

what's your take on this?