I like aspiring vegan. At least for me, it makes my intentions the most clear.
Vegan wannabe sounds scornful to me, like a person who's just doing it 'cause it's trendy.
Technically I fall in the strict vegetarian category in terms of what I eat. The problem with that label is, it leaves out the rest of the lifestyle. I don't buy leather, wool, fur etc (though I am "using up" my leather boots and wool coat.) I don't buy or use products on my skin/hair/body that have been tested on animals, or have animal ingredients. But when I am broke, I will buy the cheap dishwasher soap at the dollar store instead of paying 8 bucks for the environmentally friendly kind. When I'm financially secure, I'll be happier buying the good stuff but it's not always possible now.
So I'm stuck in a no-man's land between vegetarian and vegan. Aspiring vegan feels pretty accurate, though some true-blue vegans might not like it.