I have invested in both of these but if you will ask me to pick one I will go with EOS because:

1) TRON already saw a recent pump when there was main net. It would take some time before we see next pump.

2) EOS has got some recent big transactions which made this coin come in news. It will boost the prices.

3) EOS is much safer than TRON. You can see this is past performance and price movements.