DosBox is a nice little gadget for fast computers. However, I don't think I've seen a DosBox running Win95 yet?
Hence, PCTask is better :P
No seriously.... DosBox isn't an "enulator" as of such, it's more meant to enable you to play those oldies-goldies form the DOS era. While PCTask is a fullblown emulator and will enable you todo "anything" the PC (that it is emulating) was able todo.