Thawed frozen berries will always be softer and juicier than fresh berries. When I freeze my raspberries I place them on a cookie sheet and freeze them. Once frozen I put them into bags and place back in the freezer.
To make a pie, I take out amount needed and only let them thaw for about 10 to 15 minutes and then make pie according to recipe direction. I find frozen Raspberries and Blackberries, Boysenberries, etc all make great pies. There is no real extra juice to deal with this method. If there is, just add a little more flour or tapioca or drain off any juice. I do Pie Cherries this way also.