Before I start, let me explain what I am using it for. Portable Movies via WiFi with my Fire Stick. Back yard viewing and maybe throwing some Christmas Theme stuff on the side of my house as a Christmas decoration. Not to be used a professional theater.This projector is great for the price.My primary issue is the fan noise. This is kind of loud. I did set it up behind me and up high with a home made acoustic tile noise absorption box that has vents to keep it cool. That did help. Only problem with that concept is that I block the sensor for the remote control. You have to operate the remote from behind the projector. That is extremely painful. I will return it and look for something with a quieter fan and an IR remote.I also found it bothersome having to run a wire to the speakers. Speaker provided sounds like a transistor radio but works well with portable speakers wired to it. Not the way to go if you are going portable. Might as well add blue tooth to the mix.If this was a permanent mount, then I would hard wire everything. The plan is to be 100% portable. I thought about a battery projector too, but the life span does not suit my need. I'll us AC current while near a power source and can also bring portable power if needed that will last longer than most portable units with a battery.Picture is pretty good in a dark environment. I found that at 85 to 90 inches is about as large as I can get without having to give up on clarity (doesn't really qualify as a big screen but will work like a big TV screen for an apartment or small room). You can go larger if you want. Depends on how much picture quality you want to give up. I want at least 120""screen at the best resolution for the price.The 15 degree tilt adjustment is probably more like 10 degrees blurs at the bottom when at maximum tilt not hung on the ceiling. My resolve for this was a portable tripod that I had for a telescope that fit perfect with enough vertical height that I only had to correct the tilt at roughly 5 degrees.Focus is not that difficult. A little stiff but does dial in. This is done manually. Limited on color adjustments. You get a few presets. They kept it simple. I preferred the dynamic with cool lighting. I set my ratio to 16:9. That seemed to work the best for resolution.I have an inexpensive fold able screen that has a 1 to 2 gain. I keep mine rolled in a PVC tube with caps. Eliminates having to wait for the creases to work their way out.In summary:Noisy Fan but can be managed; don't block the remote sensor. Blue Tooth is a must since you want your speakers in front of you. When speakers are in front, you don't want people tripping over the wires.Best pic is around 85 inches.Internal speakers are not goodRemote is cheesy and needs back lightingFor the price you can't go wrong.I will upgrade and get something that can give me at 120"", need IR remote, Blue Tooth, and if possible tilt adjustment greater than 15 degrees.