Since you're having trouble with all the fire caves, you can use a skill cape or legends, however I urge Zozozo12's guide on the runescape official discussion, it helped me much when I went for mine. Here's the QFC 98-99-163-58826701. As for masters, Sumona and OSRS gold Duradel/Lapolok are fairly similar and once more is preference. Duradel gives longer tasks, Sumona gives simpler jobs and much more cannonable jobs than Duradel. I personally utilize Sumona, but after I get around to obtaining the Karamja gloves I'll probably switch. 1 last important note, use super attack and strength on every task, It will help speed it up a lot.
A cannon is very insecure. It must only be used if you get a daggnoth job, but in other creatures, it would just be a waste of cannonballs. With time, it would turn out to be pricier than a whip + DFS, since you may have to obtain a LOT of cannonballs. Wow, where do you get your info from?
If you would like to receive 85 slayer fast, I can not stress enough how important it is to cannon evey single job you can, as it speeds up things immensly. Don't be concerned about not being able to afford the cannonballs, the drops you'll be getting will cover off them, and sometimes you will even gain. I used the two Summona and Duradel, personally I enjoy Duradel's tasks better as each task gave additional exp, and there was not as chopping and changing involved. Both will take about the same period for 85, therefore try each to get a few tasks and determine what you prefer. Take this advice from someone who really has 85 slayer.
Rite, however you're overlooking his key information,"im down to 3m" or somthing like that, Hes obviously not funded well enough to cheap RuneScape gold cannon his way through so his very best bet is to be patient and pick up the money in route, so many people discredit slayer rather than a fantastic money maker. Many slayers create ~200m in their trip to 99, I Produced over 500m and that I profit daily. I never cannoned for my 99, Last week I bought a cannon to test it out and see the profit and normal tasks I would make 400k+ on I split even with balls spent cannoning them. Once they are I will deffinitly market it and return to the conventional old fashion of banking things and earning profit.