I used an ATMega128 based board at the university, but i would like to buy my own arduino.
Initially i preferred the Uno, because it is newer, but some of the uno users (on the internet) said that Duemilanove is more reliable, and its easier to program. Is this true?
Can you describe whats the difference between them and help me which one should i buy?
The boards are quite identical with only a small differences (check the hardware section for the details). If you want reliability you should use the IDE 0.22 / 0.23 iso the IDE 1.0 as not all libs are ported to 1.0 yet.
As you are a student you may go for the cheaper of the two, will probably be the Duemilanove.
I used an ATMega128 based board at the university, but i would like to buy my own arduino.
Initially i preferred the Uno, because it is newer, but some of the uno users (on the internet) said that Duemilanove is more reliable, and its easier to program. Is this true?
No, they are basically the same from a reliability and ease of programming point. The uno uses a small, faster baudrate bootloader, so uploads happen faster and there is a little more sketch memory space then the older board.
Can you describe whats the difference between them and help me which one should i buy?
Different bootloader, different USB serial converter chip.