My standards depend on how much I care or know about the subject matter. In other words, it I build an Abrams tank, there are certain standards of detail and accuracy I desire in the kit. Since there are many models of this tank available, I can chose the one that suits my needs the best.
If I build a Tiger tank, I don't care about accuracy as much as I would an Abrams. I would settle for a less accurate model if it was substantially cheaper than the highly accurate kit. I would chose fit and ease of build over the complicated multimedia super kits on the market today. In the end, it would look like a Tiger to me.
I've got a soft spot for moving parts as well. I loved the old Monogram Avenger and even picked one of them up when they were reissued a few years ago.
Recently, I stopped building for myself and decided to build for my 3 year old son. He gets so much joy out of watching me build an Army tank for him. It's given me a reason to dig out those old Tamiya motorized models sitting in a junk box, buying an unbuilt kit of the same model off of eBay and rebuilding the motorized version for him. He loves it.
I also found some snap together models from the movie Speed Racer (both the Mach 5 and Mach 6) at Target for $7 a piece. I built those two kits for him and they are getting some good use. It makes me remember what got me started with model building almost 40 years ago.
Look at the joy on this little face. Any model that lights up his face like that is acceptable to me now.