Yes, I saw many reviews raving about how great their customer support was, even months-years down the road. I'll look for specific forums as well. Issue is the garage has a south-facing asphalt shingle roof, and before I put in the vent fan would see temps of 110-120-130F for 3 months of the year. On top of that, I run space heaters 4-5 months of the year to keep the space above freezing for paint & aerosol storage, but it feels wasteful with no insulation. Now with the fan I can mostly keep it below 100, but with oppressive humidity on top of that, it still makes it hard to use the space as a productive workshop. So this shadetree mechanic is ready to be a conditioned-garage mechanic - it should make all of my projects more enjoyable. I'll definitely keep the dust factor in mind and keep the machine under some kind of cover when not in use, since the garage doubles (triples?) as a carpentry workshop on top of automotive projects and general parking use when not otherwise occupied.For that brand you picked, make sure there are forums where people talk about them and have tips in case you have issues. Make sure there is support from the manufacture, etc. A lot of 3D printers are open source, so someone can take a design, copy it and resell it. If they go cheap or improve things is up to them. There are a lot of printers that look the same and use the same basic construction, so look more into the parts and support side of them, don't just trust Amazon reviews.
There is no need to go crazy in the garage for the printer (unless you're just into that). If it's room temperature in there you'll be fine. If you are printing with ABS the keep is keeping the print hot and letting it cool slowly after it's done printing. ABS shrinks more than PLA (it's not considerable, but enough to warp a print or have it release from the bed). Your printer is enclosed and that's all you need. you can even cover a non-enclosed printer with a cardboard box or foam board to keep the heat in.
Your main issue is going to be keeping the dust out of the printer. You want to keep the bearings and belts clean, dust off of the filament which could cause a clog in the nozzle, and dust off the print bed so things will stick. Even in the house I cover my printers with an old sheet when not in use.
Filament takes a lot of work to sand to a smooth finish. You can't use power tools because it could cause too much heat and melt the plastic again. Best bet is to sand it by hand to knock off the high spots and use a lot of sandable filler primer spray paint, sanding between coats until it's smooth. Use body filler if needed.
You'll be surprised on how versatile the standard .4mm nozzle is. Going up to .8 or 1mm will generate parts faster and will work for speaker rings, but if it's something you're going to finish, the .4 nozzle will get you a cleaner start.
I have big renovation plans within the coming months and expanding/conditioning the garage for the above reasons was already high on the list.
Edited to add: I saw that this unit also can run a .2mm nozzle - is that total overkill? Seems like a good choice for finished parts as well.