Finally I will decide one of two choices.
Which one do you recommend ?

Vortech. :)

I'm having accounts on both and can say:

Vortech
Best Universal Windows and Unix reseller with powerful (to much) CP.

Eryxma
Best powerful virtual private servers and Redhat 8 with Cpanel option.

I'm thinking that it depends what you want.
Maybe better to work with both companies.