What sort of float should i be buying?

I'm looking at buying a new float but not sure exactly what i should be looking for i know what i want in it but not sure what it would be called or what type of Australian horse float brands i should be looking at? i would like a float that is a straight loader, tack boxes in the front and would fit a very large thoroughbred in it as this is the main problem with my last float it fit my 15.2 hh thoroughbred but not my 16.2hh as he does fit but its a tight squeeze and i always worry that he may not have enough room to maneuver if the float jolts and then he may fall (although he is a dream to float) and i also don't have the biggest budget either so i would love to know where to get them in Victoria for as cheap as i can get but in great nic!