I use and recommend the St. Vincent branch of
Loyal Bank. Very affordable, very convenient and very discreet.
If you need more fully-rounded services, have a look at
Fidex, who can provide you with corporations, trusts, accounts (including with Loyal) offshore merchant accounts, and more.
I strongly recommend that you look into David Marchant's
KYC News as a source of info and possible early warnings on offshore scams, which are roughly as plentiful as suckers who fall for them.
Phaedrus