I like some crazy 'themed' rolls, like this one called the mexican at the place I ate at in boston was really good. Its true you cant taste the fish as much, and sometimes barely at all, but they are good in thier own way. I like these because the veggies add a different type of freshness. The fish has a freshness of its own, but some crisp veggies in there just add another dimension.

Seaking of freshness this is why I hate tempura rolls and stuff, it just ruins it. It tastes so horrible.

Anyways Ill definatley be ordering some nigiri next time I go. I think I have similar tastes to you though. I love tuna and salmon, but other things seem too fishy to me when raw. And just from looking at the raw shrimp I know I wouldnt like it.