Assuming using one’s own speakers in the rig where the amp goes I’d say one of the little amps, and probably choose the Warwick down to its greater power.
If I knew I was playing gigs with FOH and good monitoring then it would’ve been the Sansamp route as easier to set up & carry.
I have had to do this, when the provided amp for the gig had blown, I just plugged into the Sansamp, that went to FOH & monitors, we played barely noticed any difference to the regular setup.
But of course if there were no FOH or monitors…..