i am wanting to buy a sa champion,but i haven't heard much about them.any comments or worries i should no about?and i am also thinking about getting the optional v10 porting but i called sa and they said that would add another $370.00 to the gun. is the porting worth it?and if i get the champion i want to get the front strap checkerd. the local gunsmith says it will cost $129.00 for the checkering. is that high or average?