I've read majority of this thread, and I don't think it was covered well, or I missed it, but I have a question for you guys using the smaller malt tube with the 50l. I plan to buy one of these systems soon, but want to make sure I buy smart. (Unlike I did with my first AG system, using a 5gal cooler that I out-grew in like two months.) How successful have your 5 gallon batches been with the 50l system? Using it this way can I make higher gravity 5 gallon batches in the machine without the need for DME or excessive boiling? I normally make 5 gallon batches, but don't want to limit myself too much with gravity limits, as I am a fan of larger brews. I also would like to make the occasional 10 gallon batch, so I think the 50l is best for me, but would like more input. Thanks guys!