ANSWER: Don't own yet, though would have had I bought the MacBook Air I was admiring last year. Maybe at some point I'll upgrade the MacBook Pro I bought instead.
2) If you’re planning on purchasing an SSD, which brand(s) are you considering and why (price, performance, reliability, brand, etc.)?
ANSWER: Probably would go through Other World Computing, which specializes in Mac laptop upgrades; dunno which brands they use.
3) How often do you purchase a new PC (every 12 months or less, every 12-18 months, 18-24 months, 2-3 years, over 3 years)?
ANSWER: Would love to buy new every year, but, alas, practicality (i.e. finances) mean I keep computers at least three years.
4) [Canadian residents] What is 125 plus 45 divided by 3 minus 13?
ANSWER: I live in the USA, but I'm curious why you ask this question of our Canadian friends.