Wouldn't reccommend macs unless you are reuqired to get one, simply because repairing them is *fucking expensive*. I sell them (including other laptops) and I always have to deal with pissed of broke students / customers complaining that they've gotta spend $900 to repair a mac because they dropped it and fucked some components inside.
If you get *any* laptop with an SSD, an 6th gen i3 / quad core or above and 720p~ or above screen and 7~ hours tested battery life with atleast 4gb of ram...you'll be fine. Seriously. That's around $600ish these days?
If you want to spend abit more, get something with a FHD screen (1080p), perhaps a larger SSD size and maybe an i7 with 8gb of ram. That would be plentyful. I'm running a 4GB ram laptop right now with a dual-core i3. It runs fast as hell simply because it has an SSD
The most important thing is probably SSD. Not just for the speed, but they are significantly more durable/robust than traditional hard-drives. Data is important
Also avoid laptops with a non-ingragted graphics card unless you want to play games. They make the laptop abit heavier/pricier.
I guess if you want to search some stuff up, search these keywords: Surface pro, Lenovo yoga, ThinkPad, Lenovo MIIX, Dell XPS, Inspiron, Toshiba Satellite series
use
www.staticice.com.au to find the best prices
Browse ozbargain for good deals under the laptop sections
PM me if you need any advice (goes out to anyone)