I have subscriptions for my R107, W123 and Dodge pickup.
It is convenient to use and includes a SEARCH function.
It is on-line thus is available at any computer and does not require a disc installation.
Includes flat rate times so you can estimate time to repair or cost to repair if you have work done at a shop.
Identifies factory special tools to do the job. A mixed blessing; it is up to you to jury-rig something else if you don't want to buy the tool.
The photos are terrible. They look like 6th generation reprints.
It can be incomplete in some areas since it is a selected reprint of the factory manual.
There is another level of alldata for professional shops. It is probably much better but I suspect the cost is very much higher.
Bottom line is: I find it useful but another manual on CD or paper is needed for backup. I also have CD manuals and find them more complete but less convenient to use.
Hope this is helpful.