Ken - I would clarify that since you already have Soulution, you're already 80% of the way there of tackling any problems you may encounter with the D3/room interaction.
Tough call....I guess it would all come down to listening habits, music preference, room size, etc. If you listen to a lot of rock/pop, and even some standup bass heavy jazz, at relatively loud volumes in a big room, the D3's might not be your best bet. If you listen to classical, female vocals, etc. in a moderately sized room at a moderate level (below 90db @ 1 meter), then the D3's will be excellent.
Let's face it, their are some bad bass heavy recordings that will just give them fits. But the other 90% of the time, it's bliss! The issue is that many people focus on that 10% and it ends up driving them batty.