Hi @ibanez! Thank you very much for mapping Albania and I'm glad my personal challenge motivated you. 

Regarding the ESRI imagery, as far as I have explored and mapped around Albania, the ESRI imagery is very bad in quality, and it hurts my eyes after a couple of minutes of mapping. I realize that Bing imagery might have some issues, but I think it is better to have a slightly smaller/bigger building with a little offset than nothing at all. If i use ESRI i will not be able to map as much as i do now. I am open to tips and tricks and i can also share some screenshots of the difference in quality between the two imagery if you want.