Let's see...I have Tamiya glue, white glue, Weldbond, cyanoacrylate, Humbrol Poly, Tenax 7-R and Micro Weld. Obviously, I just can't make up my mind!
But I do find that each is useful in varying situations, with the Tamiya, CA and Weldbond being the top three. I also use Future to hold small PE parts in place if they are not subject to any stress. HTH!