It’s not necessarily the make here that’s the issue. It’s the specific model, or configuration (form factor) of the hearing aid that is the issue. I think you could stick with the Phonak Virto - but get the mini canal or ITC version - which has 2 microphones. I am unsure why you have been sold the Virto B as the Virto M (Marvel) is the later model - as tenkan has said.
Your preference might be influenced by vanity. If you want absolute discretion then the CIC is the best option - but you are sacrificing performance i.e. the ability to hear in noise and there is no bluetooth capability. If you are not that fussed then the MC - Mini Canal is slightly more noticeable, the ITC more so.
If you have long or thick hair - a RIC hearing aid is practically invisible. I am balding and wear a RIC and it really is hardly noticeable anyway. If you were to go for a RIC you will get the very latest technology i.e. the Phonak Paradise. This is because the custom chip i.e. Virto M is 1 to 2 years behind the RIC model.
Oticon, Resound, Unitron, Widex, Phillips, Signia, Starkey all have custom and RIC equivalents. The one I believe you could consider as an alternative to Phonak - if you were to switch brand outright is the Oticon with their Oticon Opn S custom (ITC) or Oticon More (RIC) hearing aids. Some people love the Oticon OPN philosophy and get on really well with them.
I would ask about cros hearing aids - where you wear 2 hearing aids and sound gets transmitted to your good ear.