I have new internet, from DSL 2000 to DSL 16.000. DSL 2000 is good, too. But the upload in DSL 2000 is unconscionable!. The best is:
No internet downtime while switching
New speed was there in only some hourse, I didn't even notice it.
But:
The speed is changing from 3490 Kbit/s to 16000 kbits/s. The best DSL offer is DSL 6000, but it wasn't available :(