Our gym has the LifeFitness elliptical trainers and just got some new Precor ones. The LifeFitness ones seem almost bulletproof and the Precor ones, although a little awkward at first if you're used to the LifeFitness stride, seem like they are of equal quality.
I say if you have the money, spring for one of the brands used by commercial gyms.
When I strike it rich and have a full gym in my house, I plan on having the LifeFitness treadmill, elliptical, and recumbent bikes all with the TV attached so I can watch Family Guy while I work!