570sp A arm front end vs 570 strut

Has any one tried both .Is the sp that much better its the same travel 8.2 but adjustable shocks too. Is the 570sp worth the extra $ .I may get a 15 570eps .I like the price 6500.I don’t ride hard or fast . I do need eps for all the rocky rough trails.the 570 sp does have a cool look to it nice rims its no faster than a std 570.is the old xp550eps better as far as shocks and ride and performance than all 570s? few new xp550eps left around .