Based on your requirments, I think that the B&W 805's would be an excellent choice. I have had a pair for approximately thirty days and they sound better and better each day. I would not describe the bass as "weak" but it is not overpowering.
Need Detail/ Resolution with Impact and Weak Bass
Sounds weird right? Need some speakers for the bedroom. Having tried Electrostatic (Martin Logan) I liked the detail and spaciousness but hated that you got no impact from a rimshot, no "glistening" from high-hats and dynamic range seemed compressed. Plus, there was too much bass! The room is configured somehow to totally reinforce the bass so bass-shy speakers are actually preferred, as the bass is naturally augmented. I have a lot of amplifiers, so the options are Counterpoint SA-220 (220 watts, hybrid), Adcom GFA-555 II (200 watts solid state), or a BAT VK-200 (100 watts solid state). I don't really need it to play LOUD, meaning the music goes right through you, its the bedroom after all, but need to play with good dynamic contrasts knowing that the bass will be reinforced. The speakers will face the awesome leather chair, for relaxed listening and then need to be turned 90 degrees to face the bed because my timer will kick in at 7:30 am and activate the power conditioner which turns on the amps to wake me up, so we can't have anything to unmanageably large and unweildy. Am thinking Merlin VSM's or B&W Nautilus bookshelf, but have not heard either. Don't like a bookshelf with stands less than 28" because they need to shoot over the bedframe. Sorry to gross everyone out with the bedroom stories (hey I'm not badlooking), but I know you all have great recommendations so lets hear them.