Non-Member:
For non-member melees I recommend rune scimitar for those that have a high level of strength or a rune battle axe or 2 hander for those that have a high attack level. Some people like having rune trim, gold, guthix, zamorak, etc. I advise against using those unless you have a stash of money and want to look cool. Rune kite (remove if using 2 hander), plate leg (or skirt), body and helm are the recommended armor. I strongly advise against using any trim, gold, etc items under rune such as adamant or black. As for a necklace a power amulet and rings are completely useless. You can wear any boots, gloves and cape since they're all like the same.
Member:
Now for members there are a whole variety of equipments available. Instead of listing them I'll just tell you guys what I use. Dragon scimitar (cuz I have high strength), amulet of glory, ring of wealth, cooking gauntlets, climbing boots, rune plate body, rune plate leg, team-29 cape, and rune full helm. Now for those of you that have a seemingly endless supply of funds you can buy barrow sets or abby whip, dragon sq shield, dragon chain , dragon plate leg, fire cape, amulet of glory, ring of wealth, dragon med helm and rune boots.
Recently Died or Hacked
This is a very bad situation to be in. Since you have little or no money you should sell some stuff to get a rune scimitar (it's cheap and effective) if you don't already have one. If you have some good armor then skip this step. Go to varrock and buy yourself and black set priest gown (looks cool). Go hatless if you have to and go fight something that you can kill easily. Mine some coal or fish to get money and save every little bit of money that you have. A dragon scimitar and a zamorak, guthix, or sara book will go well together with some desert robes if you can afford them.