Cleto Reyes Velcro Sparring gloves..?

I am thinking of treating myself to a pair of Cleto reyes Velcro sparring gloves.
http://www.sugarrays.co.uk/shop/cleto-r ... white.html

I will be mostly for heavybag work possibly a little bit of sparring if permitted.

Since i'm going to be spending quite a bit of money as they are pretty expensive here in the uk,I wanted to make sure I get the size that will suit me best.

I weigh about 147lbs and the diameter of my hand measures 8 and 1/4 inches just behind the knuckles.

I was thinking of getting the 16oz any feedback would be appreciated thanks.