If once I've found the right size container for "right now" as a beginner is it best to get a container built for that exact size or to anticipate downsizing in the long term and have it built for one size down as to be able to downsize twice since i've been told you can go up OR down one size. i.e. I need a 190, have it built for a 170. Put a 190 in it. Downsize to a 170 for a 1:1 when instructed capable and still be ready for a 150 many many moons from now. I'm just thinking that if I anticipate this need now it could save me money in the longrun. Any thoughts? Also, if this is indeed the case, should i use the same reasoning with the reserve? In addition, I've spent a lot of time trying to find the "best" deal on a new container. It seems the best no bells and whistles price would be for a wings container with retailer's 30 percent discount but with the extremely long wait of 16 weeks. Is there a better deal out there?