I would go for a Marshall DSL. The sound is breathtaking, litterary, its a VERY powerful amp. All the old school thrashers are using it (slayer), and Trivium. If you dont feel frightened enough about the sound, place an overdrive pedal in front and kick serious ass.
The DSL is way better than the TSL, and is more suitable for thrash than engl or framus. So thumbs up for Marshall!!