I have a cheap Ryobi one that has sat in a box for a few years. I used it for only the second time last night. I used it as a scrub plane really just saved a bit of time over doing the job with a hand plane. Excellent at making a mess.
I was at Makers Central show earlier in the year and Triton had an enormouse one on their stand. Amazing bit of kit, God knows what you would use it for??
https://www.tritontools.com/en-GB/Product/Power Tools/Planers/TPL180
180mm for that. I see makita makes a planer about that size also (170mm...smaller than the gigantic beam plane monster), but it's $700 or so in the US. There are used versions from japan for about $200-$250. Worth of considering for what I mentioned, used at least.