Personally i think their latest rude mechanicals is the best they have done, and after witnessing them live this year(which is the best live show i have ever seen) that just confirmed it.
i don't really think they have released a bad album ever.
but you have to check out their first "futureproof" as it will give you a good indication of where they started.
these guys are are one of my favorite groups ever, and have been into them since their conception in mid 90's.
they are starting another tour soon beginning in the U.S, if you able to see them don't dare miss it, they are a sight to behold.
paddy free must be the most pasionate musician i have ever met.
check out their latest remix album and try to download some of the freebies they have on their website, as well as the 6 tracks not released on rhythm sound and movement, should be able to purchase on amplifier nz
hope this helps