solid roller vs. solid flat tappet for street??

Spring pressure plays a roll here . The heavy springs take the life out of roller lifters and rockers . Flat tap cams have a longer life but you will feel the the difference in a big roller. I have a 686 solid roller in my stroker on the street so far no problem . the 700 kept braking lifter rollers. Thats a mess when it happens. The whole motor gets tore down. the little needles and metal everywhere. I am building another stroker it will be flat tap with iron non roller rockers. More streetable because of durability. not more performance though.