Welcome Serg !
Try this.
Keep coming back to the posts and the forum here, then you will be able to make a comparison. Dhamma is a lifelong endeavour, THE ONE truly worth the while. It is not about occasional ‘excursions’ into meditation for temporary relief from the pressures of life. It is about getting to accept,as a result of reflection and understanding, the message of the Buddha, the elimination of ALL future suffering. Then to apply the Teaching. You will soon enough begin to see a transformation. A PERMANENT one. This is the criterion.
I have found of value also the desanas given by Venerable Wallasmulle Abhaya Thēro and Venerable Battaramulle Amadassana Thēro referred to by Lukas in the post English Pure Dhamma Resources in the General Forum .
May the blessings of the Buddha, the Dhamma and the Sangha guide you on in this, the Noblest of Quests.