I think it depends on ones existing taste in metal, or music for that matter. I was into thrash and death stuff like early sepultura and morbid angel, when I first heard Orchid...and it hooked me completely.
But some new fans don't like their old stuff, preferring SL or BWP. Deliverance, BWP or MAYH are probably heavier than Orchid or Morningrise yet more accessible because of the relatively orthodox song structure and riffs. Whereas Orchid and MR have a more complex, somewhat convuluted song structure...so might be a bit harder to get into for some people. Anyway, these are just my thoughts.
But some new fans don't like their old stuff, preferring SL or BWP. Deliverance, BWP or MAYH are probably heavier than Orchid or Morningrise yet more accessible because of the relatively orthodox song structure and riffs. Whereas Orchid and MR have a more complex, somewhat convuluted song structure...so might be a bit harder to get into for some people. Anyway, these are just my thoughts.