Since you say "Dont Know If I Should Get Contacts", I'm
assuming that you are not currently wearing contacts.
If you haven't worn contacts before you may want to try
wearing them for a while to get used to them prior to your
class.
If you only need correction to see up close, you can get
inexpensive inserts that can be stuck onto the inside of any mask.
I definitely wouldn't mess with contacts just for that.
Keep in mind that if you have a severe astigmatism it will be
more expensive regardless of whether you go with contacts or a
corrective mask.
If your astigmatism is slight, you may choose to not correct
for it and save money (I don't correct for mine in my contacts).
It really does depend on your perscription.
For example, if you need astigmatism correction, you will need
special toric contact lenses that have weights in them to keep
them oriented properly.
These cost more than simple correction lenses - sometimes quite a bit more.
I've never used a toric lens but, I'd be worried that they might not work as well in certain orientations, since toric lenses
are designed to work when your feet are pointing down
and thats not a normal diving position.
I'm upsidedown (head down, feet up) quit a bit
taking photos or sideways
(head and feet level with one shoulder down)
while swimming along a reef wall.
As far as masks go, their are a few options
"off the shelf" lenses or full custom.
With full custom, you get the lenses ground to match
your exact perscription. You can get whatever you want/need
including astigmatism correction or reading glass correction.
For off the shelf lenses, most manufactures only make
lenses for near sighted people (people that can only see
up close and can't see far away without correction)
in negative diopters. Some make off the shelf
positive diopter lenses for far sighted people.
The values are typically from around -1.5 to +4.0
in half step (0.5) increments.
Me,
I've worn contacts for over 30 years,
but I dive in a perscription mask.
I'm very near sighted so I went with a mask and
off the shelf lenses @ $25/each. Total cost of about $100.
I like not having to worry about every losing a contact or
having sore or irratated eyes due to contacts.
It is a pain to walk around a bit blind just before and
after putting the mask on. Shore diving really sucks because
there may be a long walk and I either have to wear the glasses
and then hide them at the shore, wear the mask or walk blind.
I do take my contacts with me on dive trips but often never
wear them. They are there in case I lose/break my perscription
mask and have to use a different mask.
--- bill