I currently have Redbacks ( Spider shoes according to my Daughter ) I like them, I do have " The Walking Store" insoles in them, and they are quite comfortable.
I'm a big dude, so shoes that are comfortable are a must.
I also have a pair of Carolinas, I like them, but they need the insoles, I haven't gotten them yet.
A sole that is OIL RESISTANT is key, slipping and sliding around on a greasy wet floor, sucks, is dangerous, and will fawk your back up.
I've had a lot of guys tell me I was full of shit, till they tried oil resistant/slip resistant soled shoes.
The best shoe is personal preference, I like the Redbacks, except that I have worn out the toe to the steel toe in about 6mos, but then, I do crawl around on the ground a lot.
TOE SAVERS will help when boots are new, Shoe Goo and brake cleaner (to draw out oil so Goo will adhere) when they are worn.
Soles with good arch support and heel cushion are also key, especially for folks who are on concrete all the time.
Heel spurs suck, and they don't get better with crappy shoes.
I have also had a slew of shoe inserts, insoles, The Walking Store seems to have the best ones ( for me anyway ) thought they are quite spendy.