Pieter Jan Leusink and his largely Dutch forces recorded all the sacred cantatas at breakneck speed - 15 months, slightly longer than Gardiner. Are they as good as Gardiner or Suzuki? In general, no; the vocal and orchestral forces are often simply not up to that standard. BUT - they ARE good, often very good, and at this price a bargain. In addition, given that Bach often had only a short time to write and rehearse a cantata (at one stage he was producing one a week), this might be the nearest thing we can achieve to what an 18th Leipzig parishioner would have heard.
Some disappointing omissions. The glorious BWV11 "Lobet Gott in seinem Reichen" isn't there, probably because it's also known as the Ascension Oratorio, and therefore not seen as a cantata. Ditto the great BWV190 isn't there (also the case with Harnoncourt) because only the vocal parts of the first two movements survive and so the orchestral parts are necessarily a reconstruction. However, for a cheap, quality way of exploring a marvellous body of music, this simply can't be beat.