friend u miss very important points..
you are companying RE-7500 with Aoyeu !!!!
personaly I used the Ayue, sorry to say its terrible and I throw it before getting mad.
one of the important difference between aoyue and re-7500 is the technolegy they used & the Temperatures monitoring.
with auoyue you can't remove metal parts or even you can't remove PF Ics because Aoyue use the reflected light IR -lamb IR- which is completely not safe on humands and can't remove all parts, thats why its not recommended to be used in service centers.
also with Aoyue you can't monitor the temperatures while reworking
you can't use it over lead-free boards ?!!!!
dont forget my friend that there is many features also in RE-7500 not exist with Aoyue
- like cooling stages
- online temperature monitoring while reworking
- automatic profiling to adjust the machine to work automaticly
- USB connection to add extra features and control
- your hands are free while operation
dont forget this one also.
no hard feelings
but RE-7500 i think is better than ersa maybe