Re: Hafler Triple Giant (designed by Bogner)...what can you tell me about this piece?
I researched this one a while ago and wondered if it was good enough to convert me to a rack setup. I contacted Gearjoneser about it and he basically told me it was a pretty cheap sounding version of Bogner's other stuff. With that said, I know Trace from Voodoo Amps does some amazing sounding mods on them so if you can find one for a good price, are looking for a rack setup, and willing to ship it around to get the necessary mods, then yes, it's worth it.
The Shark was discontinued a while ago, but I see them pop up in different places for decent prices, usually around the 2 grand range (compare to 2700 for a XTC Classic). From what I've gathered, they don't sound as good as the newer Bogners.
I think you'll find your Shiva is right up there with the best Bogner has ever produced. I see a lot of artists use them nowadays and also, I've heard of quite a few people with XTCs that went back to the Shiva. After all, Jerry Cantrell used them and he owned a Shark back in the day. Some food for thought : )