Diana+ versus Holga? Instant back?

So, my boyfriend is in love with my camera, my Nikon D5000. We were just talking the other day, and he was talking about how he would love to have a vintage camera, especially an instant film camera. I've been looking into cameras for him, and I think lomography would fit him really nicely. Although, I'm torn between a Diana+ and a Holga. Both have instant film backs you can add, although Diana's aren't too great, while Holga's is super expensive. There's a Diana kit on Amazon which has basically every attachment you could want, minus the instant back, of course, for a little over $200.It even comes with the camera. Just the instant back for the Holga is over $170, plus the $30 for the camera, and we're around the same price, with only one attachment instead of many. I feel like getting the Holga instant back is guarenteed to work, but with the Diana, you can get so many more attachments. I'm stuck.

Yikes!

Unless your boyfriend has extensive experience using a camera without a light meter and one that has only two f/stops and one timed shutter speed, this may not be a good plan. Add to the fact that Polaroid compliant film is very expensive, you have a recipe for disaster.

I suggest you spend the $30 on a simple LOMO camera and see how your boyfriends images turn out before spending so much on what is essentially just a toy camera.

My next suggestion is you find an nice 35 mm Nikon camera and that he learn to use it to produce images to his liking using film. You can find good used Nikon 35 mm SLR's with lens for under $150

Just buy a 35mm film SLR - they are so cheap now. I'm using a 30 year old Pentax ME Super and prefer it to my two digital-SLR cameras. He can learn photography with that, and play lomo later.