谁用谁知道哈。

PIC用起来很快，资料比较丰富，功耗很低，其他的不太了解，我只用过一段时间。用什么单片机是根据你的项目定的，有些人是偏好，有些是老板要求

PIC16/18以前面对AVR，经常被人说的就是贵，不过经过这次AVR涨价，估计没人再提了。总体上PIC的价格和AVR，TI的DSP比起来，还是比较稳定的。前几个月，买MCP2551，附带问了一下NXP的PCA82C250，涨得厉害还买不到。

Mhz for Mhz, AVRs are 4x faster than PIC.

AVRs are 1990's technology, and PICs much ealier.

PICs have a much larger user / code base. But AVRs are growing much faster.

PICs are generally cheaper than AVRs, sometimes by a factor of 2 or 3x.

AVR is very expensive , most of them are very hard to buy