Africa - about ghana domestic airlines..

I am going to Takoradi in Ghana.
it takes 5 (or more) hours to get there from Accra by driving
and the condition of road there also not so okay.

so i'm looking for a flight to get there (so the route will be from Accra to Takoradi)

I got to know 2 domestic airlines in Ghana which are Antrak Air and Citylink

Antrak is cheaper($93) and takes shorter time(35mins)
(Citylink costs $139 and takes 45mins)

i wonder why is that cheaper one takes shorter time?
and which air line is SAFER? (the most important thing :D)

anyone who has any information about Ghana domestic airlines
or who can resolve my question , please help me. thanks:)

oh and just one more thing
does anyone know about the other air line in ghana called 'Air Shuttle'?
can't find web page and any information about it. just heard there's this new air line

personally i would drive to Takoradi, far safer than either of the curent domestic Airlines.

The road is good between Accra and Takoradi, there are major works at the Mallan Junction which will cause some small delay but after that a good road now

Stuart