Well yeah, "they are extremely reliable, accurate, consistent and very well designed." I have shot the others you mentioned but shoot better with my Glock 26. Fortunately, we all get to pick the one we like. I am in the majority as a Glock guy.
True but you got to quiz all representative as to their current and future products. They were friendly and interested in your concerns. They were there to resolve any problems you may have had.
Yes, Chore Boy around a brush is extremely effective. Don't be tempted to use regular steel wool. I would change ammo. If you reload, use lead covered with HiTek coating. Zero leading and nothing cheaper.