Is there Really a difference between a Krell 400xi intergrated amp and the newer Vandgard?


I currently own a Krell 400xi intergrated amp. It has 200 watts a 750k toroidal, balanced inputs, etc. Its very similar to the current vanguard intergrated amp in terms of similar spec's. I would like to know if anyone upgraded and if it was worth it? Is the sound different does it go lower, deeper, more of an open sound stage or should I just consider another route to improve what I already have.

thanks,

matt00
Post removed 
Thanks! for sharing carmenc-

I am most familiar Transparent cabling- very good to outstanding based upon your budget.

I have always wanted to audition MIT. Where would be a good place to start?  Happy Listening!
The newer krell stuff reminds me cosmetically of monster power racks.  Is there a particular reason for wanting to change?
Research dave_b and his take on the difference between the Krell 400xi and the Vanguard.  I don't believe we're off topic here.  Research, research and listen for yourself.  Why regurgitate all of this when there is great insight that exists within these forums?  Best regards.