Hello Linda,
The guys have made good points in questioning whether the 10x42 HD will suite you for weight and magnification. With lens caps it's well over 900g (32oz). That's more than I would want to carry on a neck strap all day, but a harness would spread the load. I normaly switch between a 10x and 7x binocular depending on the terrain. I find the extra reach of the 10x is frequently an advantage, but to get the benefit the weight, grip and balance needs to be right for you. I needed to play around with my hand positions to get it steady. The higher weight damped down the shake for a while... until my arms tired. The 7x I have is much lighter and not only better suited to warblers, but when a lot of hiking is involved.
I compared the HD and non HD versions of the 10x42 when the latter was released in Europe. The non HD is no slouch, but side by side, I found the extra centre sharpness and fine colour detail of the HD impressive. To be honest I don't recall what difference there was to peripheral colour fringing. The cleaner, chrisper centre was what struck me. I though the advantage was even greater with the 12x50 HD I tried later. I should point out that not everyone reports the kind of difference I found, so we can't predict if you would appreciate the benefit.
You might be aware that Meopta have supplied binoculars to Cabela's in the US for many years. The intricacies of the contract has prevented Meopta from offering HD versions of their own Meostar for all the models in the range. As far as we understand it the Cabela's Instinct Euro HD is the Meostar and is available as the 8x32, 8x42, 10x42, 10x50 and 12x50 HDs. I can't say I'm persuaded that the new pattern armour has improved their look, but as far as we know the optics haven't changed.
Good luck,
David