You will need to define some constraints, especially your budget and what you will and won't use the scope for.
Some of those prices seem rather high. Do a sanity check by looking at ebay. If you are a beginner, be wary of buying anything other than a working scope.
You will get people saying "must be digital, must be DS1054Z". Ignore them. An engineer is someone that can do something for $1 that any fool can do for $10. An engineer will learn the capabilities of each tool, and will use ingenuity to make valid measurements with simple tools. That's fun and looks good on a CV, and is a good discussion point during interview.
If you are at school/university, see if they have equipment that you can use for your own projects, e.g. at night.