A Mac could be nice but those things are rape price wise to get just a shytty one. Your best bet if you do go mac is to get one for sale on Ebay and maybe get a deal on a 2015 one with 8gb ram or if your techy buy the ram yourself and replace it.
With you using FL though you're gonna need a PC so for PC's you could ball out and get an alienware which is over a grand even on Ebay, you could get a Razer Blade which is over a grand, you could get an MSI like homie post above me mentioned, you could get a nice HP laptop like the Envy or something or a Dell. Me personally I got me a spectre which has a touch screen and mine came with 16gb's ram, a good processor though it's a U processor and 500gb SSD for 900+ so I got mine for a steal.
As for buying I recommend trusted users on Ebay who have tons of good reviews, you could find good deals there. Especially from this seller where I bought my computer back in october
eritechinc on eBay
Also check this site to compare laptops
Laptop Mag: Find the Perfect Laptop, Tablet or 2-in-1 for You
Another place to look for deals is bestbuy.
Good luck fam!