Personally, from experience with some of the best two ways I have heard. Going with the RF82 II's the mids will suffer from the mass of the 8in cones.
For me typically I hear a recessed mid-range from the larger mid-woofer cones.
By stepping down to the RF62 II's with 6.5in cones the mid-woofer mass is better able to give the resolve and impact of a decent 3-way.
DaveC here has RF-25's which have 6.5in cones as well here
Dave has done some modifications where he substituted higher quality components to replace the stock crossover which necessitated an external box added to the rear of his RF25's pictured.
http://www.audiokarma.org/forums/newreply.php?do=postreply&t=457307
The work was first rate if I do say so myself The sound was even more amazing and further the bass was pretty astonishing without any sacrifice of mid-range performance.
His speaker has great coherency from top to bottom not to mention sound quality that reviles something costing thousands more.
The neat thing about his project was the cost, $600 for the speakers and $600 for the high performance parts vs my own Forte mods that cost me $2500 in parts alone.
Another plus for Daves speakers is that they have no listener fatigue and can be listened to all day smooth as silk.
The stock networks were not to bad by any means in fact one of the better Klipsch I have heard. But the mods as I said took the speaker to a whole new level of performance.
So I would buy the RF 62 II's and listen a while then think about what DaveC did.
As the late Steen Duelund like to say the weakest link in a loudspeaker is its networks.
SET12