Get a pre-nup,the only big downside to a partnership is if it goes south. The best thing to do before forming a partnership is deciding how you will disolve it. An accountant would be an invaluable aset in this process.
Well....that is what we (me and my wife) use for our company....and we are a LLC. Seems to work good so far, but I am not much of a accountant/tax/lawyer type of gooroo...