I bought the DeutschlandSIM under a special offer. So far I am very satisfied, especially porting worked smoothly. Already in the morning the old number was switched. The communication to went smoothly, just like all other requests. So far the network is fast and reliable, the network coverage sufficient in O2 network.
Pleasant also the supply of a Sim that works for all three sizes and that was no additional identification procedures necessary.
My wage is incidentally the SMART 1000 with 1GB, 250 SMS and 250 minutes and sufficient for me as an opportunity callers and frequent surfers completely out.