Hemi , 440 or supercharge small block?
6 of 1, half dozen of another.
I think that decisions like this need more info. We already see the horsepower range you'd like to hit, but are there any other criteria?
A roots style blower has the WOW effect. Some guys prefer to keep everything under the hood.
Some guys want a 'sleeper' that takes everyone by surprise when it comes to life.
If budget is a concern then the parts that you already have available becomes a factor.
If your question is 'which would we prefer?' then I tend to go for as much WOW as I can fit in my budget for a car that doesn't get driven long distances.
I like 'old school' but some really decent mileage can come from high horse late model motors. If I was going to put mega miles on the car I would look at the 3rd gen hemis. - WOW factor plus acceptable economy.
I would choose the direction based on the planned usage. Right now most of the longer trips we make are in our blah vehicles because my favorite ones are too thirsty.
