I test drove a 2007 4 door Unlimited X manual yesterday and liked it so much that I bought (ordered) one! Now I have never owned a Jeep before, but I have been an avid fan since Jeep made CJ 5's, but $$ or circumstance always prevented me from getting one. I have driven Jeeps that have belonged to friends, and can tell you that this Jeep had a much better on road feel, likely due to the extra wheelbase length and the wider stance, (though it is higher than the '06 models). As for the interior - yes, there is a lot of plastic, though the seats were very nice and supportive (5'11, 165 lb frame), with plenty of leg room. There is no dead pedal though which I found annoying even on the test drive, but I'll just make one out of wood or something. It is very spacious though, much more so than any other Jeep Wrangler/CJ I've been in. Personally, I would prefer it if the dash was still metal with just a speedo and gas gauge, but those days are gone. I think the power package is sacriledge, though I'm sure it's only a matter of time before Wranglers offer leather seats with seat warmers. Not for me, but I love the idea of a four door Wrangler, and I like the look too. It's much better looking than the Hummer and Land Rover.
As for power, coming from a manual 1995 Subaru awd wagon with 135hp, the 202hp that the Jeep puts out feels about the same; not a tire burner by any means, but more than sufficient power to move you off the line at a stop light or bog through deep sand like I expect to do, though I wouldn't try passing a semi on a two way uphill. I suppose it's all what your used to, and what your needs are. I'll post more when I get it in 6 - 8 weeks.