Hi - I'm new to S&W, M&P 9mm pro CORE 17 rds. and new to tactical lights. Looking for recommendations, pros or cons, on good tactical light attachments (red dots, laser lights, flashlights, or whatever type there are). One that might mount closest in line with the barrel so I don't have to compensate too much. Also, long lasting battery. brightest light, etc (Everything, why not!?) I’ve been told best not to use a sight - learn to aim correctly from beginning - but I need sight for medical reasons. Thanks.