Hey Jerry,
Have you had anything to do with the Zeiss Victory 10x54 HT binoculars,..?
I see that they are half a pound heavier than the 10x42 Victory HT's,
And wonder if with the 12mm wider objective lens, (they would let in more light), and give brighter overall views than the 10x42's.
I also notice that there does'nt seem to be any mention on the web of a 10x54 in the Victory SF, available at the moment.
Neil M
Since HT is touted by Zeiss as their low light model I don't see them bringing out a 54 or 56 SF.
Some keen eyed folks have remarked that HT 54s are not as sharp as they expected but Zeiss maintain it is a low light specialist instrument and don't recommend it for regular birding. I've looked through them a fair bit and found them to be OK rather than wonderful. Whether you would benefit from the extra light grasp depends whether your pupils open up enough but some say (with some justification) that looking through bigger diameter lenses brings other benefits.
For super sharp performance I would stick with SF.
Lee