You insulted ISDs being puny and weak in comparison to culture ships.
Oh. Great work. Really.
BUT WHAT WAS THE MEANING OF THAT???
You said you wanted an ISD (in part) because it was powerful. I was just pointing out that if you're after power, you should really look to the Culture (or Xeelee, or Foundation Federation, or 5th Imperium, etc.).
I just hate those 'SW rools ST suxx' posts.
Who doesn't?
For those of us unversed, what the hell is the Culture?
The basic idea of the Culture is that everyone is free to do whatever they are able to do. They have practically no laws, and those laws they do have are designed to prevent bad things from happening (like murder), rather than to punish people who have already done those things. The Culture economy is so strong that you can have pretty much anything you want (even a planet), so there's no real need for money. Culture AI's are far beyond humans in intelligence, so they consequently make most of the important decisions.
As for their capabilities...
Culture science ships can easily blow up planets. Culture ships fight at ranges measured in light years. They always fight at FTL speeds. Their EM Effectors (all military drones and ships carry them) can basically do anything your average high-powered telepath can do, plus other nifty stuff like draining energy out of things. Their favorite way to deliver a weapon is to displace it into the target, which basically means they teleport it in via singularity. Their fields are basically a combination of shields and force fields, which are flexible enough to mute sounds, deflect weaponry, carry heavy objects, or physically manipulate objects on an extremely small scale. And if enemy fire does manage to get past a ship's fields, their trapdoor system allows them to shunt out tremendous amounts of energy, making them nigh-invulnerable to Big 3 level civilizations. Culture ground warfare is conducted primarily by drones, which are basically like Culture ships that can fit in your pocket. If they ever do wish to send an organic being into a dangerous situation, they can equip that person with kiloton+ rated hand weapons, gel field suits which can protect the wearer from the conditions inside an active volcano (among other things), and memoryforms, which are deployable guns that can be packed down to the size of a cuff link.
Well, that should be enough information for a start.