I'd say 7s with the rule 4 applied would be the 'best odds'
Not sure I agree with that Simmo. The SP of 7/1 was the final industry agreed odds, after NR adjustments so if offered BOG I would expect to be paid out at 7/1 even if I’d backed a horse at 5/1 before the NRs.
Whether we should be getting BOG is another question but if they’re going to offer it then they should at least do it properly.