Hi Roofer
Bins (as birders call them) have 2 main elements, the magnification i.e. 8x, 10x, 12x and the size of the front element
The higher the magnification the closer things appear; the larger the front element the brighter the subject appears or that they are better in low light
Most birders don't use anything above 10x as they suffer from what we'd call 'camera shake', powerful lenses can't be handheld and get a sharp pic. bins are the same. Most use 8x, and all I know, avoid zooms for poor image quality
So, I suggest a compact version (lighter and easier to carry, therefore not left in the car so much) with an 8x mag and as big a front element as you can find in your budget
Most camera makers make such, so the glass is pretty good these days at £100 (I use a Nikon compact pair (obviously

) that were just £105 about 3 years ago - but any such will be fine)
HTH