Ah yes, I know them well. They're, to put it politely, _crap_, even compared to the Zeiss 8x25 Terra. Eye relief is horrible, even if you don't wear glasses, unless you have very short eyelashes. Contrast is miserable. Overall, they are a small step above the absolutely worthless $25-$50 pocket roofs that come in plastic bubble packaging.
Girafenaine, please consider the following, which I say as one the very few people on BirdForum who actually likes and regularly uses tiny binoculars. The thing about small binoculars (pocket and compact models) is that they are inherently hard to use. They are almost universally harder to handle well, harder to get to the eyes and in focus rapidly, and are inherently challenged to perform well enough optically to reliably (or ever) deliver the view needed for birding. Frankly, nearly all pocket binoculars are unacceptable for birding use, and in my opinion most aren't much good for any other use either. To get a pocket roof model that really works well enough for birding requires spending on the best (or maybe, nowadays, at least as much as the Zeiss 8x25 Terra). Only then do you even begin to approach the utility of a modestly priced model in a larger format. The capability of the Leica 8x20 Ultravid (and of the old Zeiss 8x20 Victory Compact) is truly extraordinary for the format, but it is quite expensive. The capability of the Zeiss 8x25 Victory Pocket is, in my opinion, nothing short of miraculous. It is the first pocket roof that handles and optically delivers like a mid-sized bin. As a long time user of the Leica 8x20 Ultravid, the Zeiss 8x25 Victory leaves me awestruck.
Maybe you won't spend on the Victory or Ultravid. In that case, get the Terra or the 8x30 Monarch 7. Or get a quality reverse-porro compact like the Bushnell 7x26, or one of the many very decent and more widely available alternatives to it, such as the Nikon 8x25 ProStaff ATB. Don't be lured into the cesspool of lesser pocket-roof offerings such as the Nikon Sportstar/Trailblazer. They are cheap but they are worthless. Money wasted. They serve only to appeal to (but not satisfy) consumer desire for a binocular so small, light, and cheap as to not be noticed for their effect on the pocket or pocketbook. They ought to be outlawed. They serve only to extract a bit of money from the gullible, naive, or desperate. They don't serve as functional birding binoculars. Again, if you want small and cheap, get the Nikon 8x25 ProStaff ATB or something equivalent. These reverse-porros are quite good. Their only weak point is narrow FOV.
--AP