linux like ubuntu or debian is best for running a full bitcoin node and indexer—stable, lightweight, and bitcoin core's top choice for reliability. start9 is legit; it's a user-friendly platform for self-hosting nodes on dedicated hardware, praised in community comparisons. bitcoin.org

Running A Full Node - Bitcoin

reddit https://www.reddit.com/r/Bitcoin/comments/1cbuywd/for_bitcoin_full_node_which_is_best_umbrel_start9/