A good resource on-line is:
http://www.monstermoving.com/
Also, when looking for an apartment, try to find those small apartment booklets that are free - they are usually located at the supermarket where all the free flyers, brochures, and discounts are - and grab a couple of different ones.
Sometimes they have web sites that have 3D tours and floor plans...that's how I narrowed down my current apartment.
I use the web sites to help me narrow it down to about three and then go visit these. In MY opinion, the ONLY reason I would EXCUSE a complex not having a site is if they are NEW, lol! Other than that, I would have to wonder why they are not on-line yet....at least with an order form for visitors requesting information packets!
Good Luck!