Heed Obelisk Integrated?

Looking for feedback and opinions on the Obelisk, especially direct comparisons to other amps and dissenting views. I have the opportunity to buy the current model (Si III) at a great price and need to decide quickly. I've searched the forum ad nauseum but would still like opinions and feedback since I can't demo this beforehand
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I owned the Heed Elixir for a while and it was very good for its price.  Very dynamic with lots of drive and energy.  It had a little bit of a grainy edge that I could never quite get past and I ended up selling it.  I don't know how the Obelisk compares, but would expect it to be a little more refined.
What speakers are you using?