Horns for Rock.

The older Klipsch are the only way to go. Don't use the RF7s they are tinker toys and yes all you need are Heresies but don't underpower them. I have LaScalas and Heresies and think the bass is better on the Heresies. The laScalas will play very very loud but you don't want to hurt yourself now do you!

gotta agree with the heresies. classic hybrid, and rocks

You could also look for some of the pro model La Scalas. Bigger bass driver than stock. They come in a couple varieties (split or full cabinet) and they aren't very common, but can be found. There's also a pro model Heresy - I don't know how or if that speaker differs from the stock model. I have pro La Scalas (full cabinet) and they are all I've ever wanted in a rock speaker, and any other for that matter.

Altec is another speaker you really ought to investigate before making a final decision.

Thanks for all the suggestions, he bought a brand new pair of Klipsch Heresy III's for a really good price.