One of my friends was using 840C + 840A + ProAc 1sC. He sold his 840C and bought 95. He told me, the sound is really different when listening CD. 95 sounds thinner, it's not as warm as 840C. So if you like 840C's sound, you won't like 95's sound charactiristics.
Finally, he sold his 95, bought Naim CD and 93. This is just for your reference. In my opinion, you better keep 840C, and buy 93 or LX-55