For patients with oligo-progressive prostate cancer fit for metastasis-directed therapy but ineligible for radiotherapy or surgery, how do you decide between the types of ablation available?   

Consider oligo-progressive metastatic disease to the pelvis s/p remote EBRT for localized prostate cancer, with a progressive node despite systemic therapy controlling much of the other systemic disease.  How do you decide among the various options: radiofrequency or microwave, pulsed electric field, cryoablation, or others?  Is proton therapy re-irradiation a consideration?