Only go to authorized Apple shops while inside warranty IMO. There are plenty of technicians out there who will open your MacBook and clean it up for the time you will drink a coffee.

As for the MBP 2015, many users have reported that the thermal paste Apple puts in it in the factory is not optimal and they achieved 4-7 degress less sustained temperature by using a better one. I am attempting to do that soon.

As for air sprays, DEFINITELY DO NOT THAT. MacBooks are crazy packed on the inside, it's very risky in my opinion. Cleaning it from dust once or twice a year is extremely cheap around here in Bulgaria -- they charge me 20 EUR if they are grumpy. (Mine is out of warranty however, I bought it refurbished from a colleague.) Authorized Apple shops might charge times more though, I haven't asked and I don't know.

And finally, replacing the thermal paste is also an extremely quick process. A good technician does it for 30 to 45 minutes and a paste costing no more than 20-25 EUR can be at the top of its game for 2 years or more, depending on usage.

All in all, I plan to de-dust the laptop in a service shop once a year, and change thermal paste if I notice an increased sustained temperature. (Definitely buy iStat Menus, it gives you tons of diagnostic info right on your menu bar.)

Hope that helps.

Thanks a lot. I will definitely do a little research on the thermal issue. I was hesitant to buy this as it's about 2x as much for what I usually pay for laptops, and it's also very bad specs for a 'new' computer. But they are so much better than Windows and Linux.

My MBP 2015 definitely runs everything faster than my very solid gaming and development PC. Granted it has a newer i7 but it can't be only that; the difference overall is big.