If you are 15 miles out and let a squall sneak up on you, the answer is no - the big motor won’t get you to safety, Seamanship is the only thing that can get you safely in. You won’t be planing in at 15 knots in 30 knot blow and a 4-6 foot chop. The fact that you are asking the question makes @jssailem ‘s point that you don’t know what you don’t know. You need to be constantly weather aware, particularly if you are 15 miles out.I don't plan on sailing more than 10-15 miles offshore. I know I'd be okay in good weather, but how will the Macs fair if I'm caught in a storm? I've seen others say the Sound can get pretty nasty. If I'm stuck in the middle, can the Macs easily escape to safety under power?
Even if the Macs are appropriate for my situation, I'm still not completely sold on them. I'd like suggestions for other boats that are suitable for me. I'm looking in the 18-26 foot range and my budget is 5k-10k.
You definitely DON’T want a Macgregor. These are quirky boats for quirky people that really want them. I searched for nearly a year before I found mine, and I am really enjoying it. I had read every vitriolic diatribe written about them, in addition to glowing reviews from the Mac cult following. The fact that you say you aren’t sold on them pretty much tells me you shouldn’t get one.
There are plenty of boats you can get with your budget. Find one you’re really sold on AFTER you’ve honed in on how you’ll use it. You can’t always run from the weather - no matter how big your motor is. You need to learn your boat and know what to do to come through a blow.
Good luck in your search.