I have had both and am using a Spott Hogg right now. I like the way its built and adjustments that can be made. Pins are not the brightest to me when it gets late.
Used a HHA a couple of years and will say its a great sight too. Pins are probably brighter if compared side by side.
Go to a pro shop late in the day and take one of each brand all things equal in design as they can be, go outside or in a dark area of the building and see which one works for you.
One of these two sights or maybe the Montana Black Gold should fill you needs.
