Avoid Chrome!!! buy black. Refurbishment with a can of black spray paint is easy. Rusty chrome (and it ALWAYS rusts)looks daggy and can only be fixed with a new one.
Tripods are best, black carbon fibre are lightest but V expensive.
As above make sure that the locking/adjusting mechanisms on the height and boom are effective and easy to use. Buy the best that you can afford then mark your name clearly 'cause they will be coveted by thy neighbour. The mike holder should be of the soft rubber type as it will help to soak up extraenous vibrations. Mike leads should be of the highest quality that you can afford, One test of a good lead is it's "limpness". Never finish rolling up a mike lead with a knot, use velcro lead tidies.
I see That I am gradually working my way to the PA so I will resist further pontificating.