We have the Wacker 1550. I think the compaction rate is like 3,400# or something like that. This is great for smaller jobs, but you can only do 2" lifts with it. Also a great machine for on top of the pavers. We also use a large Bomag. Compaction on this bad boy is like 9,000#. We use this for larger jobs. We can get a good 6-7" per lift on this one.