I paid $189 for a Vortex Nomad 15-45x60mm spotting scope a few years ago and paid about the same for a Leupold Ventana 15-45x60mm a year or so ago. Both are good scopes, but the Leupold is better. The Nomad is no longer available.
The street price on a new Leupold Ventana is right around $250 at present. It's still a good deal and offers well corrected optics with sharp images, multi-coated optics, good color and smooth focusing.
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For $110 you can go with this one from Orion. They sell mostly re-branded Chinese optics (like most brands) but they market them to birdwatchers, so the quality is still pretty good. There are, believe it or not, some well made chinese spotting scopes with good performance. They form the mid range of many major brand's offerings.
Orion Grandview 16-48x65mm
This is another lower priced option that will still offer ok performance out to 200-300 yards.
Celstron Ultima 16-55x65
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With a 60mm or 65mm objective, none one of the above scopes will give great image quality above about the mid range of the zoom, but that's true for nearly all spotting scopes and you need to buy one with that expectation in mind. There is always the temptation that more magnification will make small holes easier to see, and thats not often the case. The objective size and the quality of the lenses have a significant impact on resolving power, and adding more magnification to low quality telescope just produces a dim, grainy, low resolution image. You're better off using lower magnifications with an optic system that can generate decent images that are bright and have minimal chromatic aberration and false color.
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There is always a temptation to go with something like this but it's almost always a bad idea:
Bushnell Sentry
I tried one a few years ago. It's light, compact and durable, but the mirage quality is poor, it's not sharp edge to edge and looking through it quickly becomes a strain.
It's worth spending another $50 to $100 to get something better. If should be able to look through a spotting scope for a few minutes and not notice any effort. If you notice the effort, it's a really poor choice.