HitBTC got a fairly new coin on called PCL.
Seems to be loads of activity around it.
I'm terrible at getting in when coins are going cheap but this one is at very early stages.
Does anyone know much about it?

Anybody's guess really. I have PRL, ZIL, IOST, IOTA, SMT, SNET, ELF to mention a few possibles.

I've been looking at Zilliqa and IOST just in case the technology behind them does get seen as a breakthrough. A lot of the coins already mentioned in other posts are probably good in the sense that they are well established with a very big support base at the very least.

I don't know there are many quick x100 out there. I've invested in Zilliqa.

From what I can see the pump and dump, quick fix fans don't like it too much as it has a lot of coins available and as it is developing slowly is unlikely to boom very quickly. But for those same reasons it seems like a good one to invest and hold in for my money. As it is a slow burner there may be no rush to get involved but I have bought and will hopefully have the patience to hold.