That's a very good price for that basic board performance. The differences with these sources is that they can have varying customized software which can have varying degrees of bugginess. There are many "sellers" of these units who have a base unit built for them that they then put the backbone operating software (the ROM and MCU files) into.

Eonon participates very heavily in the E46 Fanatics forum and provides a lot of support, which is why I purchased an Eonon for my E46 (a Windows version which has been very rock solid after initial Eonon patches) and when it came time for my E53 upgrade I went with another Eonon unit.

If you purchase a unit with a buggy or poorly developed ROM and/or MCU you will spend a lot of time on

https://forum.xda-developers.com/and...re-development

to sort out the mess.

Do your research on the most widely purchased units for the E53 and choose carefully.

Mike

__________________

Mike
Dallas, TX & Appleton, WI
2003 E53 4.4i Pearl Beige
2003 E46 330Xi Monaco Blue
2007 E90 335Xi Black Sapphire Metallic
2011 F25 X3 28i Black Sapphire Metallic