Proper boots, no question about it.
Mine were only about $150 when I bought them 5 years ago from Colemans (on sale), and they are still doing an awesome job, even though I have given them hell in that time (multiple rallies and rides). I just treat them with a leather treatment every 6 months or so and they are still not leaking.
My point: You do not HAVE to go to extremely expensive gear to get the results.
But sneakers are (as you have come to decided also) nowhere near what you should be wearing.
Good luck.
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