roller rockers!

Do ya really need roller rockers? If you are not running a huge cam and turning lots of rpm, rollers are not really needed. I have run the Isky 1604's and never saw any excessive guide wear. I'm pretty sure they don't produce these anymore but have found them on Ebay and at swap meets before and the last set I bought, they were only 100 bucks and still in the box new. These were several hundred many years ago....and and after doing a search, Summit has a 1604 listed for 389.00 but there's no pic. I ran them on a 440 with a 660 lift roller, shifting at 6900 and crossing at nearly 7300 rpm...