I found Wing to be incredibly average, coming from someone who didn't grow up with it.
I literally got into Toonami right after Wing finished airing as a kid.
Some characters are cool, but its strengths are in its sound track, mech design and secondary characters.
Overall, a pretty "meh" experience, at least on my part. Treize was the only guy keeping me around after a while.
If you want stand-alone titles, I'd try Gundam X or Turn A Gundam. They're both incredibly solid.
G is great too if you're into super robot anime and wuxia. It's a huge detour from the usual Gundam titles.
But, if you really want to get into the nitty-gritty of Gundam, get into the UC timeline.
Start with Gundam 0079 > Zeta Gundam > ZZ Gundam > Char's Counterattack.
Afterwards you can get into the OVA's, but overall, they're relatively optional (08th MS Team, 0083 Stardust Memory. 0080 War in the Pocket, Unicorn, etc.).
Then ya' got distant UC, like Victory and F91 but... meh, whatever. That becomes relevant to you the more you watch UC.
So yeah, tl;dr, try X or Turn A, or start UC time line with 0079 > Z > ZZ > CCA.