I have returned to this game after a few years break and I´m not sure anymore about the proper update path (or which version is considered as "stable". I have searched the forum and found a lot of info but often it contradicts to each other

After a base installation I have 4 patches downloaded:
1126a
1126b
1127b
1128b
I would go for 26a, then 26b as those I know and played them before. But whats next? Do I need to go through 27b to 28b or can I skip 27b and go directly to 28b or should I stay at 26b?
I plan to look for oponent for stock map/scen 1 or 2 so I don´t have to consider any mods/versions.
Any advice, please?
Thank you in advance
