I don't have either, but the Sony has some neat features. However, at the moment, there is only one prime lens offered, a 16mm. There are currently only two other Sony E-mount lenses: the 18-55mm, and an 18-200mm. You can fit other non-E-mount lenses with an adapter, but they won't autofocus.
As for the Canon, I don't know why someone would recommend 50mm and 85mm lenses to you, unless you expressed an interest in portrait photography. Still, not everyone needs one, and certainly most people don't need both. Neither is a particularly good length for general purpose photography, because the XSi is a crop-sensor camera. A better all-purpose (and relatively inexpensive) prime would be the Canon 35mm f/2. THe faster f/1.4 would be even better, but it's more than three times the cost.
Hi there!
I'm new to the photography world and looking to buy my first DSLR. I have been reading a lot about the Sony NEX-5. I love how small it is and all the reviews I've found have been great so I'm seriously looking into purchasing it with the 18-55mm lens. However, it was personally recommended to me prior to this that I purchase the Canon EOS Digital Rebel Xsi with the 18-55mm, then purchase the f1.4 50mm and an 85mm as solid lenses to go with it. First, I'm wondering which you would recommend out of the two and second, I'm wondering, if I did go with the NEX-5, would I run into any trouble when buying a 50mm and an 85mm to go with it?
Thank you!

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