You will get CD quality recordings using a digital recorder. Cueing to a particular track on the tape is done in an instant which is also an advantage. You can record continuously for up to 2 hours with a digital recorder whereas it is recommended that, if recording with an analog cassette recorder, you should only use cassettes up to 60 minutes in length. One thing to consider, though, is that digital recorders cannot tolerate high humidity. If you are going to be recording in humid climates, an analog cassette recorder would be a better choice.
Most digital recorders use rechargeable batteries.
They provide a clear, bright sound without unnecessarily draining the battery in your recorder. I'm not getting enough playback volume on my recorder. The first thing to check is that the record level is turned as high as possible without distorting when making your recordings. If your recorder has been calibrated for a particular tape stock you'll want to use that kind of cassette. Also, check the speaker volume and turn it up all the way.