Ranking telescopes for planets is one of the few places where a clear answer exists, because the requirement is narrow: resolution, contrast and a mount steady enough to hold high magnification without shaking.
Under three hundred dollars
A 130mm tabletop dobsonian at $305.00 is the most planetary capability available at this end of the market, because it puts the money into aperture and into a base that does not wobble. The 114mm reflector at $91.00 on sale is close behind on optics and depends on the mount it is sold with, which is where cheap packages usually fail.
Between three hundred and a thousand
A 150mm to 200mm dobsonian, or a 127mm to 150mm maksutov or schmidt-cassegrain on a tracking mount. The compact catadioptric designs are traditional planetary instruments because they give a long focal length in a short tube and track well, which matters enormously at 200x when the planet crosses the field in seconds.
What not to buy for planets
Anything sold on magnification, and anything on a mount that shakes. At planetary magnifications a mount that takes three seconds to settle after a touch makes focusing a test of patience, and focusing is where planetary detail is won or lost.
Questions people ask about telescope
What is the best telescope to see planets and galaxies?
They pull in different directions but not far apart: a 150mm to 200mm dobsonian does both well, because aperture serves galaxies and resolution serves planets, and one instrument supplies both.
Is a goto telescope better for planets?
It helps at high magnification, because tracking keeps the planet in the field while you study it. It does not improve the image, and buying tracking out of the aperture budget is usually a poor trade.
Does a planetary telescope need a long focal length?
No, but a long focal ratio makes cheap eyepieces perform better at high power. With good eyepieces a fast instrument performs the same.