I have a BeBook one too, for just over a year now. I find it is excellent for reading epub and less so for PDF. I have many PDFs they work and are acceptable to read but a bigger display handling images would be nicer. I am looking toward an iPad as I imagine it will be cheaper than the iRex 1000s which is $1600.00
https://www.dadirect.com/books/iRexDR1000S.asp
I have no regrets and it has been a joy to use. The extended battery life is wonderful.