True, the temp iso booths are very uncomfortable to work in. You are better off actually building something yourself. The materials aren't *that* pricey, you'd probably be surprised. Besides, you can have an A/C vent in there to cool off whoever is in the space, and make it a much more comfortable environment. What are the dimensions of your basement? You could split the room up with walls, something like...a room with your equipment (DAW, monitors, rackmount gear, etc.) in the corner...this would be one idea, but not too great for mixing unless you treated the space acoustically which would cost some $$$ in order to get it ok for mixing in. Or, you could make a room big enough for a drumset, and a smaller room for guitar cabs. That way you can record drums, guitars, and bass (via direct) at the same time and lay down the vocals afterwards using the drum room. Leaving the rest of the space for your DAW. Isolated from the instruments so that you can track using monitors instead of headphones. If you wanted, you could get some shields, they are made of plexiglass, or you can even find them on sweetware made of wood and have acoustic treatments on them already, and that would isolate somewhat from drums, vocals, guitar cabs, etc. You could do that, using headphones to track, and then once everyone's done, you could use the monitors to mix, etc. There are a lot of options, if you have the dimensions of the basement, post them up, we can help you split it up.
~006