You're welcome Meambler.
I have read good things about the HK 990. I don't know if its better than the Marantz but it is more feature laden and powerful. If it has a HT Bypass feature and your interested in upping your budget, I would sure put it on my short list.
I am usually quick to recommend the Marantz PM8004 because like its more expensive big brothers, it is built at Marantz' reference factory in Japan. Its quality and construction is first rate. So since you are now asking about more expensive models, consider the PM15S2 LE that is now being closed out because a new model has taken its place.
http://www.musicdirect.com/p-54301-marantz-pm-15s2-limited-integrated-amp.aspx
This is the integrated I use and could not be more happy. It drives 4 Ohm VA Bach Grands and I don't plan on upgrading for a long time.
Other integrateds to consider are the Creek Evolution 5350 on sale too:
http://www.musicdirect.com/p-13585-creek-evolution-5350-integrated-amp.aspx
But with this one, you would have to get Creeks plug in phono section or a separate phono pre. Nevertheless, a good quality amp at a great price. It has the HT Bypass feature too.
Hope all of this helps. Good luck in your journey to get the VPI Scout singing at its very best.