I'll respond to my own question. My system consists of an MTX 4-channel amp connected to (4) Pioneer speakers (pretty basic) which is installed in an 08 Ford Ranger. I burned the VAR 02 profile today on CD-R and loaded it into the head unit. I also burned the VAR Sub 02 as someone on this site said it worked well for them. Although the profile does sound pretty good at LOW volumes it does sound really overly "boosted" at any other level. If I were listening to it loud without the Bongiovi on and then switched it on, my head would pop off (lol), and I would probably overdrive the speakers as well. This is why it probably works so well compensating for OEM equipment.
The main reason for my purchase of this unit was that it included 5-Volt pre-amp outs. It's almost impossible to get a head unit with two pairs of 5-Volt pre-amp outs for $109.00 (what I paid). I'm able to really get some sound out of my MTX now as opposed to the previous head unit that had 2.5-Volt outs. In addition, it IS a nice head unit with the other features such as USB, SD, etc.
If you can be happy with one of the available profiles OR using it without the Bongiovi on, then it is a great product for the current price. That's my .02 !