Dont really know which dog to get... perhaps some opinions?

okay i am thinking about getting a dog. yesterday, i asked this same question and most people said aussies. i saw all these utube videos with aussies in a huge place that seem to streach on forever. i live in an urban kind of town and there arent much places like that exept for the park, which holds over 180 acers of land, all gr and woods. i was planning to spend two hours there every day at weekdays and a bit more on the weekends. i didnt know that aussies need a large place to sleep and eat in. do they? or could they cope with like a half of a house (also known as a duplex) with a bit of woods in the back? i was then thinking about border collies but i knew they were more hyper than aussies. but could they live healthy and happily with only two hours(i could make it more in the afternoon, to about 4 hours) a per day at a large park and live in a duplex??? if i cant, could you suggest me another dog that is sort of like the aussie, has same size and looks, that fits into my life??