Enchanted sapphire bracelets, skills necklaces and rings of dueling is the fastest. The bracelet makes it so when you mine clay its soft not normal clay and the necklaces/rings allow for fast banking/traveling.
Runescape wikia is one of the most trustable sources for information in my opinion. Have you ever read over some of the entries? Theres always monsters dropping party hats, quests giving millions of exp and so on. Take everything from runewikia with a pinch of salt the same as you would with any wiki.
So reds 246 per chin @ 705gp mid Greys 184 per chin @ 481gp mid 800000/246=3.25k of reds 800000/184=4.35k of greys 3.25k*705=2291250 4.35k*481=2092350 So 2.3m with reds, 2.1m with greys. All excluding prayer pots, familiars and range potions.
Only take 1 super restore to 1 sara brew, the rest should be prayer pots and take holy wrench (its 2 extra prayer points per dose at 72 which is 172 more points which your current setup) Replace the holy symbol with atleast unholy symbol if not a stole. Use barrows gloves if you have them.
Too many to really give a definitive answer, but if I had to pick it would be either the summoning update or the new prayers (I really, really need to unlock them).
If you already have the image and want to add transparency so that when you erase/delete part of the image it is transparent its; Layer->Transparency->Add alpha channel
Start -> run/search -> [type] msconfig [hit enter] Start up tab. Deselect any which you don't need. Programs like google update, java update, adobe reader speed launch, etc. Avoid disabling anything you don't know about.
With your stats maging rex. Its nice exp per hour (600 casts or so) and great money (made over 3m/hour last night there). Then if you want to burn some money burst/barrage rock lobsters. Avis are ok, but you'll lose a small amount of money. Metal dragons are boring as hell IMO as they take an age to kill. Spectres are a bad idea as there magic based so won't take damage too well. Tzhaar should be an ok option now they changed the drops, nothing great but you should atleast break even.
Don't bother with barrows gear. A strong range bonus + high defense will mean you kill faster therefore take less damage. You can get away with a 170+ range defense and bunyip with the odd ee/sgs spec. A few baskets of stawberries and a few emergency B2P tabs. I believe about 200+ range bonus gorg maxed the arma kc with only bunyips, ee/sgs and 4 B2P tabs.
Ok your build is a bit questionable. The case is more personal preference, but this would be my choice. Antec Three Hundred - $55 Get this graphics card (no point in buying "black edition" graphics cards XFX HD-585A-ZNFC Radeon HD 5850 (Cypress Pro) 1GB I'd get a 860 i7 http://www.newegg.com/Product/Product.aspx?Item=N82E16819115214 - $280 with a 1156 motherboard (a lot cheaper and the 860 is on par with the 920) With the 1156 motherboard you can get a 8gb kit for only $200 G.SKILL Ripjaws Series 8GB (4 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 If you getting an ATI graphics card it would be wiser to get a crossfire motherboard as opposed to SLI (allowing you to double up)
Skip to 3.57 TBH that spot/method only works well with a unicorn, if you have guthans with less then a titan you'll need to heal more which involves risking primes range a lot more. That is the best safe spot for general use. Its possible to lure more west and have rex stuck just before that location, without taking any hits if you fast. Never let your hp drop below 70 as prime is evil.
There range has been increased (the RuneTek upgrade caused it as a side effect). tbh supreme won't ever get you. Prime however will if you use the old spot or don't wait for him to get out of range. Theres a nice guide with the best spot in AoW (general I think).
Cantristenon its one of the very few npc's (therea about 3 if I remember correctly) which has a magic based ranged attack. Think of it like bloodvelds, protect from melee stops there damage but without protect/deflect prayers its all based on your magic defense. Its the same reason why guthans/barrows + protect magic fails at waterfiends.