Electrical valves all the way. Had one sticking and decided to replace all 4 with electric Valterras and love them. Yes, it is a lot of work but got them all done over 2 weekends with no regrets while still living full time so it can be done.
Chris & Donna
2014 Voltage Epic 3990, 600AH Lifeblue, 1895W Solar, 3K Magnum w/AGS, 3X Micro-Air ES
2018 RAM 3500 Laramie Sport Crew Cab 6.7 Cummins, AISIN 4X4 DRW 4.10 Long Bed Dually 2004 Sportster 1200c