I shoot a lot of Federal Lightning HV load #510B (previously Champion #510) primarily purchased at Walmart. For the price, it is hard to beat. I also shoot a lot of Remington Thunderbolt as I view it as a good baseline for comparing more expensive ammunition to it. My favorites are "medium expensive" such as Wolf Match Target and Wolf Match Extra, but I don't shoot them as much. I would like to say that I shoot lots of match grade ammunition, but I don't. I have a fair supply, but I don't shoot it that much. I use the $12+ a box stuff primarily for testing my rifles, but rarely shoot it due to the price. I don't shoot competitively yet, so if my groups are a little larger than I would like due to ammunition choice, tis life. But I do want to know what shoots well in a particular rifle.
Been shooting some of the CCI Standard Velocity stuff of late and it's not bad. The Federal Champion Target #714's are good too when you can find them.
Shooting cheap ammo in a $500 to $1000 rifle; that's me. But I really enjoy a fine rifle. If I get 1/2" groups at 50 yds, I'm generally satisfied. Remington Thunderbolts generally give me 3/4" groups at 50 yds with some flyers when I try. I strive for better, but that takes cash. If you think 22 ammo is expensive now.... wait until the VAT is inflicted on US consumers to pay down the debt.
I seldom shoot good ammo in my handguns. I'm just not a good enough shot to make it worthwhile. I'm more interested in stuff that works (few FTF) and stuff that feeds reliably in my semi-auto pistols.