Update from this post -- after about a week of experimenting with various methods, I can certainly say that the following have made their way into my cabinet:
* Sally Hershberger Major Body Volumizing Style Boost (Hairspray)
* Sally Hershberger Supreme Lift Root Boost & Heat Protect
* TIGI Bed Head Superstar Queen For a Day Thickening Spray
The Oscar Blandi Pronto Texture & Volume Spray was really not a necessity. My hair looks so good upon immediate use, but falls to nothingness after about 5 minutes. I could see this being a great product for those of you with a lot of thick strands.
I know the least about hair so read about my routine with a grain of salt. I basically spray the Root Boost & Heat Protectant into my hair while it's fully wet, then blow dry on high (+hot) for just a few seconds to prep it for the other stuff. Afterwards, I'll blast Tigi's thickening spray into the roots and continue blow drying until my hair is half-way dry. Feel free to use a thickening lotion at this point - I use less than a dime size amount of Redken Thickening Lotion 06 Body Builder (this is not new to my hair routine) and blow dry until fully dry. If I'm not lazy, I'll curl my hair with a 2in barrel iron to get loose waves and finish off with a few spritz of the Sally Hershberger volumizing spray. And if it's a good hair day, my hair will look like above.