I agree with you on Tardy, seriously...I really don't like Obituary at all...
With Wormed, the production is very loud, but the riffs are actually quite epic, the breakdowns are very atypical but still allow enough room to actually headbang/mosh/whatever to them which is a quite admirable trait. The drumming is quite amazing (though again, it's very loud, and the snare sometimes sounds kind of stupid) and there is even some guitar harmonizing in the riffs despite all the distortion stacked onto them. Some of the things Phlegeton does with vocals sound much more like a percussive instrument than actual vocals producing phonetic sounds (and his English is pretty shit too, so even when you read the lyrics, it's tough to find out what's going on sometimes, though the lyrics are very interesting). Some of the bass interplay is quite cool too, sounds almost fretless like in Spiral Architect or something. It's quite an epic album, despite only being like 25 minutes long...