I finally decided to install HBC on my Wii, which I got back when they were still hard to find, so it's now well out of warranty. I have been thinking about homebrew for a while so I held off on 4.3 and then forgot about it.
The only exploitable game I actually own is Brawl. Should I hack with bannerbomb and then upgrade to 4.3, or upgrade to 4.3 and then use smash stack? Is there any difference?