Though I always seem to be doing this, I can't help but ask you to consider the Tannoy Arena. The other two packages you mention were well beaten all round by these when I auditioned. And clarity and details is one of the strong-points.
I'd also consider the KEF 5005s which were very good for detail, but not as musical as the B&Ws or Arena.
The MT-30 just never seems to go down in price. I think it's due to a mix of all the recommendations it gets and it's inoffensive styling and nice looking sub. The Arena was in the same price bracket some five years ago but can now be had for less. The 3005SE started at about £100 and is now much less it seems.
The problem I found with the MT-30 was in terms of detail and high requeny response, (dead sounding at the top end), whereas the 3005SE just wasn't very good for music, especially the bass, (mainly due to the subwoofer), and didn't have the greatest detail.
If you don't like the Arena, then I think your best bet would be to partner the 5005, (or 3005SE but they are less detailed), sats with a good subwoofer, which might well be possible for cheaper than the MT-30. Or alternatively, if you aren't too worried about music you could go for the 5005 or 3005SE package.
Hope this helps in your decision making.