Maintenance free / sealed battery are less hassle. Been using them for 15+ years.
I am even using it for my diesel generator for 6+ years. Recently replaced generator battery, after last one lasted 3 years 3 months! Previous one was Bosch, now got AC Delco. This is placed inside the canopy of generator. The heat produced by diesel generator is significant. Its placed out in open with no shade and unlike car no air can flow through it like while driving to get rid of heat! So heat hasn't caused any issue so far.