What is the best Portable Digital Recorder

Hi all

I am attending lectures sometimes, and I need to record it. Usually, it is far away from the leturer. i like to sit in at the back.

I did my homework googling about the subject. Really, it was not easy to decide as I am not that guru in this field.

There are many companies: Sony, Tascam, Zoom ...etc.
Also, many products from each company.

What I need Is:
- Small one that I can carry with me easily not as Sony PCM-D1 which is so big.
- My budget is under $700.
- Can record in MP3 and WAV.
- Has a rechargable battery along with other power source.
- Can record from its own mic, no need to add other mics.


I think that Tascam DR100 or PCM-D50 will do the job, but not sure.

I hate sony because of its memory stick

Any help, please.