I chose a solid flat tappet cam with tool steel lifters for my latest Hemi build. The budget was not the first concern, I wanted the following in order: Reliability, Longevity, Power, and Low maintenance. Yes, periodic valve adjustments will be the downside, but that's a thing you only need to do every 5,000 miles or so and realistically It would probably take me several years to put that many miles on the car.