As my Pago Facil account is still blocked I had to look out for alternative services,
tl;dr for me the rates are not as good as sending WU to PagoFacil.
found that
xoom.com has a good exchange rate and if you get one of the
remitly promo rates (sometimes it's limited to certain amount) then the exchange (currently 1:1465,70) rate is as good as WU (currently 1:1465,00). The promo (
https://remit.ly/o17rgv80) may give you up to 30 USD discount (send 50 USD pay 25), but then a worse exchange rate (currently 1:1424), still good for sending a small amount. I also tried
moneygram, they have a similar rate as remitly, giving you a good rate for the first 1000 USD (1:1488 instad of 1:1418).
Are you using other services?