Commbank ??? ................Run.
EBM's policy is a special purpose policy intended for a specific market segment. Ditto Terri Sheer. "General Insurer" policies tend to try to fill the market but often lack robust cover or have holes for a truck to drive through. Its like travel insurance - You can find yourself uncovered if you don't buy carefully.
Draw up a page with three columns. Left colum is the feature and other two colums are for how each policy deals with that issue. Compare policy wordings, coverage terms and limits for both policies. ie waiting periods, definition of tenant, insured events, conditions (ie Police report) and so on. Ignore price to start with.
Final line - Cost. You will already have made a decision before you get to this item I can assure you. I can say I see lots of landlord insurance costs in tax returns. The EBM cost is competitive and on the low end. Some are outrageous and play fear to ramp up prices for those who don't shop around and use their own home insurer for convenience or a 5% discount.
I don't use EBM personally so cant comment on claims experience.