I just thought I'd summarise life with the BB for a few people building theirs at the moment, it takes a while to get the thing dialled in but my best advice is be very patient and methodical when working through the final steps of the build (assembling the axis movements and the calibration/alignment). Pretty much you can take your time here and get it as close to right as you can from the start or you can spend 5x the effort redoing it after failed prints....do NOT rush through the alignment section (it's hard because it's right at the end and you want to see the printer printing..but think how nice it will be when the first print you do is looking great) Manually level your bed as best as you can, yes the printers have autolevel/mesh levelling but this is an addition to starting with a level bed not a substitute. my printer is running so level that I don't need them, takes 10 minutes to get this right. I wish octoprint also recorded filament usage and hours for aborted prints. In terms of finished prints I am at 110 hours of printing and just over half a km of filament, no mechanical or electrical breakdowns so far. Build success rate I am running at 76% but not really doing anything that adventurous at the moment (apart from dabbling with woodfill). no print has been worse than my old K8200 could do and the vast majority are noticeably better, I still think I can make my Z axis better. Ergonomically there are a few frustrations, default power switch location, spool location and filament loading in general are all worse than my old printer. Octopi is worth it, you can't be in the room with your printer printing all the time, even if you don't like the workflow of running prints through by uploading them via Octopi and would rather work from SD, having a cam feed and a remote abort button is handy. A work project needs some 3D printed parts and I had the fit slightly wrong, tweaked the design and put it in the queue and had a replacement waiting ready for me when I got home. I leave my printer with the bed clean and some filament loaded so if I need to use it remotely I just have to call home and ask someone to switch it on (remote power switching on the todo list) S3D I think on balance is worth it, I don't like some of the things about the company (daft licensing terms around sharing of gcode, unsigned installation, slow update cycle rather than short sprints) but their support seems responsive and for me for the most part it seems to slice better than anything else I have used. Bed coating, I have bought PEI sheet but not fitted it yet, PLA works for me with just a clean glass bed but I am pretty much just using an almost invisibly thin coat of glue stick for PLA and woodfill and getting great results, I let the bed sit at the set temp for 10-15 minutes before prints start if starting from cold (because it takes a while for the surface of the glass to match what the thermistor is seeing).