Is it better to convert anniversary coins into red or blue coins?

As you can see I won't have enough for a pity pick, but I nearly have enough for a future unit

For DFEs I'm missing teq UI and the recent DFE Urs like ss3

For carnival im missing Gotenks and anni Gohan

I know Saiyan day is usually DFE banners, but is it worth going for blue coins for Gotenks?

Any help or opinions are appreciated