None exist that have all the features I want. So few players even have a card slot. Finding one that browses by folders, has a user replaceable battery with inexpensive spare batteries(AA or AAA battery preferred), that plays 16 kbps mp3 and WMA files, and has bookmarks seems to be almost impossible. i also want both AM and FM radio, although I could carry a separate radio for that. Another thing I want is a microphone jack and advanced recording features(mp3 recording, record level setting, etc.).
I think what you are looking for is the digital equivelant to this:
As you have obviously done your homework and researched what is available in the marketplace, you surely must’ve come to the conclusion that nobody is making what you deem to be the perfect mp3 player. Shouldn’t that tell you something? Like maybe you need to lower your expectations or shorten your ‘wish’ list? Or realize that if nobody is incorporating these features or functions that you consider so vital or necessary maybe they really aren’t?
There’s got to be a reason why at least some of these companies are not building your ‘dream machine’. As discussed in another thread recently, the technology field, especially electronic technology may abandon current or ‘standard’ products that work very well in favor of what’s newest, smallest, cutting-edge stuff whether it’s superior or not. That’s just the way it is.
I think the only way you are going to find what you are looking for is to build it yourself. Let us know when you’ve got it complete and we’ll see how many you sell.