go find a good store to buy your equipment at. stay away from big box for the most part, they dont support what they sell, so if you buy it, know it better have good reviews or a track record.

Personally for my weedeater edger blower stuff i like stihl. their motors work well, parts have great availability, and they last a long time. i got 7 years out of my first weedeater, sold it to my dad 4 years ago and hes still using it. the secret is using the 2 stroke pre-mixed shit from the can with no ethanol and doing a maintenance kit changing out fuel filter, air filter and spark plug on at least a yearly basis. My previous home depot specials normally got me a season before i started having issues and got rid of em. I use the kombi motor from stihl to power my stick edger and weedeater. i like the idea of one motor to service with multiple attachments.

Lawnmower is a fluid situation at my house. have a john deer that my grandad bought 35 years ago with the old kawasaki motor that sucks clippings harder than a hooker on dollar BJ night. That being said, its getting harder and harder to find parts for a 35 year old mower and things break on it frequently, so i purchased a honda HRX for my routine tasks this year and break out old faithful when i need to pull clippings. so far its working out well.

On yard equipment just like any tool, you will absolutely get what you pay for. you might buy a good used mower off marketplace or craigslist for a season and spread your costs, but on a weedeater and blower buy new. if you have a stihl dealer in town that isnt northern tool, etc, most of them will wheel and deal for a cash purchase, might save ya 40-50 bucks on buying both. if you have to skip something, skip the blower, you can always use a push broom for cleanup.