Depending on the system...I have the B&O and my kick panel speakers are only woofers, no tweeters, so I'm not sure that would be much of an improvement over the stock 4".
I had no issues reaching 70 mph on the Moab off rodeo sandy two tracks. This was a stock Badlands 4 door with HOSS 2.0.
I have the same on my 2 door Badsquatch, thinking of 8112's when the time comes.
The 5100's are definitely a down grade from the Badlands stock, position sensitive shocks, the 6200's are arguably a bit better with their overall diameter being larger, but without the remote reservoir and the 8112's are obscenely awesome!