advice on packs, boots, sleeping bags & tents

Hi All,
I am fairly new to hiking and this forum and am seeking the advice of those more experienced.
I have recently been investigating equipment for multiday hiking etc and have been bombarded by brands, prices, usage, jargon and all the sales pitches imaginable.
My travels will be building up over the next 2-3 years and will include 2-3 day treks in my local area, the 3-4 day trek in the gold coast hinter lands, fraser island, hitchenbrook, new zealand and then hopefully Europe.
What i would like to know is the following, please bare in mind that the trekking im looking at varies in difficultly & length.
PACKS
What sized pack should i be looking at to fit a sleeping bag, tent, sleeping mat, stove etc? - 65L, 75L or 90L?
What brands are most reliable? - i was informed one planet is the best.
Should i look at getting a hybrid pack with a detachable day pack?
Is it better to have a pack with 2 compartments rather than one whole one for accessibility?
is it necessary to have one with a bladder included?
FOOTWEAR
What type of boot cut - Low, mid, or high will be most reliable for the treks im looking at?
what brands are most suitable?
Should i have two pairs?
Are gaiters necessary?
SLEEPING BAGS
what type of rating/thickness will my sleeping bag need to be for New Zealand & Europe, with out being to hot and uncomfortable for the goldcoast, fraser island and hitchenbrook?
what brands are most reliable?
SLEEPING MATS?
Will a poor quality mat lose heat and attribute to cold?
What is the ideal thickness without loosing to much pack space?
what brands are most reliable?
STOVE
what is the best type of portable stove and fuel type that will last over 3-5 night without taking up to much space?
TENT
What brands are most reliable?
Is a two man tent spacious enough for 2 people, 2 sleeping mats + backpacks etc?
CLOTHES
what thermal clothing is recommended for the above treks?
I do realise this is a lot to answer and i do appreciate the time. I have had a lot of conflicting answers to some of the above questions and would love it if they could be clarified. I also understand that the cheapest option is never the best way to go when buying this type of equipment, in saying that i need to be cost effective and stick to a budget.
Thanks to all that respond.
I am fairly new to hiking and this forum and am seeking the advice of those more experienced.
I have recently been investigating equipment for multiday hiking etc and have been bombarded by brands, prices, usage, jargon and all the sales pitches imaginable.
My travels will be building up over the next 2-3 years and will include 2-3 day treks in my local area, the 3-4 day trek in the gold coast hinter lands, fraser island, hitchenbrook, new zealand and then hopefully Europe.
What i would like to know is the following, please bare in mind that the trekking im looking at varies in difficultly & length.
PACKS
What sized pack should i be looking at to fit a sleeping bag, tent, sleeping mat, stove etc? - 65L, 75L or 90L?
What brands are most reliable? - i was informed one planet is the best.
Should i look at getting a hybrid pack with a detachable day pack?
Is it better to have a pack with 2 compartments rather than one whole one for accessibility?
is it necessary to have one with a bladder included?
FOOTWEAR
What type of boot cut - Low, mid, or high will be most reliable for the treks im looking at?
what brands are most suitable?
Should i have two pairs?
Are gaiters necessary?
SLEEPING BAGS
what type of rating/thickness will my sleeping bag need to be for New Zealand & Europe, with out being to hot and uncomfortable for the goldcoast, fraser island and hitchenbrook?
what brands are most reliable?
SLEEPING MATS?
Will a poor quality mat lose heat and attribute to cold?
What is the ideal thickness without loosing to much pack space?
what brands are most reliable?
STOVE
what is the best type of portable stove and fuel type that will last over 3-5 night without taking up to much space?
TENT
What brands are most reliable?
Is a two man tent spacious enough for 2 people, 2 sleeping mats + backpacks etc?
CLOTHES
what thermal clothing is recommended for the above treks?
I do realise this is a lot to answer and i do appreciate the time. I have had a lot of conflicting answers to some of the above questions and would love it if they could be clarified. I also understand that the cheapest option is never the best way to go when buying this type of equipment, in saying that i need to be cost effective and stick to a budget.
Thanks to all that respond.