This is the only thread I've seen that has a realistic discussion of ethanol and methanol, so I'll throw in my $.02. I can say from experience that the more methanol you can remove, the more pleasant you will be the following morning. I started distillation with a one gallon jug and an electric teakettle, and finished with an industrial operation and reflux still that could produce 195 proof alcohol.

All fermentation causes methanol to be created, pectin makes the situation worse.

The purest ethanol flat out doesn't give me a hangover. The rest does.

I've used a plastic bag condenser before. It works, but it's inconvenient. Everything you need for a better setup can be had for $5 from a hardware store.