I was given a Sonicare toothbrush. If I knew then what I know now, I would've bought one years ago.
What is it that you know now that makes you say this? My dentist suggested I get one, but $40 for a toothbrush?! And you still have to replace the heads, for more than the price of a regular toothbrush....
I'm not the OP, but my dentist had been recommending that I get a Sonicare
for years. After 6 months of use, he complemented me on my improvement
without knowing I'd switched to the Sonicare.
Some people have great dental hygiene results without using the Sonicare,
but even with proper technique and timing myself twice a day (2 minutes
per session, plus flossing), I could not get the same results until I acquired
a Sonicare. YMMV. For me, it was an investment in my health.