I tried A LOT of speakers in my HT before keeping the 340s and 200 surrounds, I can promise you, if you are looking for something nice you won't find it for less money... The Carnegie's are also a very nice buy and the fit and finish is leaps and bounds above the 340s, the highs are nicer in the csb1's but the 340s fill a room a little easier, I havent heard the matching center for thecsbs yet, but I really like them with a sub for music...
In closing if you don't mind the finish on the 340s {which isnt bad, just not a fancy gloss or veneer by any means}, you wont regret the purchase... I have heard the focals and they are also nice, but I think the ascends sound better, but again, the finish on the focals is nicer... To get a better ht speaker that is noticeably better than the 340s in all aspects, expect to spend $2000+, now there are spaekrs out there for much less that look better, but thats not where ascend decided to spend the build budget on these... Also a nice front end is the 340 center with the cbm170 left and right...