The root evil in these types of view points / perceptions / notions is the view point / perception / notion itself (See: Skandha). This perception off Sanna creates fabrication by reacting.
When you put aside perception about self / karma relate views, then by this you are liberated from this fabrication (karmic formation) related to these view. Developing a perception off no self can be conducive to dissolve ego but also can be a hindrance as this can lead to clinging to the view. So you have to let go of this also.
Hindu techniques can take you upto the lever that there is neither perception nor perception and with some residual sensations (called Passadhi in Buddhism). Buddhism deals even eradicating the last residual bit off perception and sensations and to there you can have very mild for of clinging.
As with both Hindu and Buddhism the breath is the body conditioner. In the Pranayama you control the breath to created desired effects on the body and life. These could be extreme pleasantness of even very tranquil feelings. In the Buddhism version of Breath meditation there are 16 stages out off which the 1st 4 deals with calming the bodily fabrication as opposed to creating new bodily fabrications. By calming the bodily fabrication also you get tranquillity but this is born out of the process of calming as well as dissolving unwholesome fabrication than creating fabrications. In Buddhism there are 3 evil roots or poisons: loba, dosa and moha. Dosa generally creates uneasy feeling but based on loba and moha (action based on perception) can create Piti and Passadhi respectively. (See: 7 factors of enlightenment). So the road the Patanjali / Vedic system and Buddhism is taking are different roads.