I know they are more expensive but are beautiful fish, with the red line down the whole body instead of half like the neon.
It is debatable about neons with discus, some books say they can go together with similar temperatures, others say the complete opposite. If your are still alive see how they go, they might have adjusted well.
Other tetras....rummy noses (about $8 each), cardinals (about $8 each), harlequins (about $5 each), there are probably more and these fish like shoals of a minimum of about at least 6-8 fish. This is sometimes the reason people go for neons instead, due to the expense, but large shoals can look amazing in planted tanks.
For effect I recommend to stick to your discus, cardinals and maybe rummy noses, but I haven't had any of these fish yet so I wouldn't really know, but other setups like this look awesome with a well planted tank
Hope this helps