First thing - everyone needs at least one 1911. I think it's a law somewhere.

Next thing - deciding to buy a 1911 isn't going to help you much in reducing your choices. I have a Sig Sauer Nightmare that I really love. I've fired my friend's Les Baer that doesn't impress me any more than the Sig. It might be the Sig's ergonomics and "upgrades" I like better. I've tried many others, too, and the Sig suits me best. You'll find Colt, S&W, Dan Wesson, Kimber, Browning, Ruger, Remington, STI, Ed Brown, Springfield and Rock Island are all in lists of "Top 1911s". This firearm design is over 100 years old. Decide if you are an absolutist seeking the original design, or if you're open to improvements and design modifications that update the original for a variety of benefits. That means comparing each model from each maker and understanding which ones sound interesting. Hopefully you'll be able to test-handle those before buying one, but sometimes you just have to go with the reviews and trust your instinct. You won't lose your shirt if you resell it, and if you got a great sale price, you might break even.
Last thing - If you're serious about practicing regularly with .45, it's a good idea to decide early on if you also want to start reloading. The sooner you start, the quicker the cost of getting started will pay for itself. If you intend to reload, then it might factor into deciding if you're going to buy a bulk 1,000 rd case right away or not.
9MM costs in the $200-$230 per 1000 rds bulk. .45 ACP costs in the $400-$450 range per 1000 rds bulk. It all depends on the brand and who's selling it. Prices fluctuate, so check the local stores for current prices.
I don't know what a .45 ACP rd reload costs per round, but I'm sure someone here can tell you. When you can get the bullets with flat-rate shipping, it saves having to buy ammo after the shipping and HAZMAT fees.
So, do some planning ahead on the ammo. Reloading takes time, but being on an outer island, the cost and experience might be worth the time spent reloading.
That's my 2.5 cents.
