you friend should buy a mount on tropical atoll, you can gain it free there. this mount is the full 160%! the griffon even has the griffonleap-skill
You should answer to the question if you know it!
You gave advice in what information have accumulted over the years in game, but maybe you didn't met all circumstances yet.
In our particular case your advice it is wrong. If I tell you why, than you know the case.
The problem with "Frantic Furry's Colar" it is: as I know it receive fall damage. If it wouldn't than it would be very nice for us.
The Grypon it is another idea, but farming in Atol it takes considerable amount of time.
Prophetic cards gives the best "fee mounts" for around 20 euro, but once spent 50 eur on Compass and didn't got any.
Collector eddition would be nice...if it would be an event right now and would have a horse, the last one didn't had...