I've had an NT1-A for many years. Unfortunately, it didn't suit my own voice at all and I considered selling it. But one day I tried it on someone else's voice and it was a perfect fit for him, so I hung onto the mic. I've also tried it on acoustic guitar and wasn't terribly impressed, though it was OK.
Based on my experience, I would not recommend it as your one all-around general-purpose condenser, although it'd be a nice addition to a mic collection. If you don't have any LDCs now, look instead for something that's fairly flat, has good off-axis response, a high-pass filter, and preferably one with multiple polar patterns for best versatility (the NT1-A has none of these features).
Unfortunately, that set of features jumps you into a higher price range than the NT1. Some of the mid-range Audio Technica mics offer excellent price/performance value. Consider saving up for an AT-4050, for example (~ $700), or an AKG C414 (~$1K) or Shure KSM-44 (also about a grand).
But if you need something now and you're limited to an under $400 price range, your best bet is to order from somebody with a liberal return policy such as Sweetwater and just try the Rode out. If that doesn't float your boat, return it and try an MXL, AKG C214, AT-4040 or Shure SM-27.