Death metal can be relatively easy to get into, if you enter through the proper channels. For me it was Hypocrisy and Dark Tranquillity, death metal bands that use melody, which served as training wheels for me until my need for melody decreased and I was able to appreciate the general aesthetics of death metal on their own, the technical riffs, the rough vocals, and the raw aggression.
Seeing as you like thrash a lot, I would start with early Morbid Angel and explore the Florida scene from there. Once done with that, you'll be ready for other scenes such as Sweden and New York.