Is XXTEA a good encryption algorithm for a PIC microcontroller?

I need a good encryption algorithm for the PIC microcontroller. After some googling, it seems that XXTEA is the only option, however, "XXTEA is vulnerable to attack with the selected clear text, requiring 2 ^ 59 queries and little work . "

I am not good at cryptography, so I would like to ask: how accurate is the above statement? Can I use XXTEA in a commercial security application? If not, is there any algorithm available that I could use for my embedded system?