I've just recently started my collection, one that I'll have to make due with for awhile because of finances and the family. So, I understand, especially, getting anything and not having it work out to be rather disappointing, regardless of the price. That being said, since I haven't tried everything in my collection yet, my answer to the poll is limited.
Overall, I say get some inexpensive vibes you wouldn't mind to try that have all the features you'd like at a reasonable price for you. Even though none of us want to waste money, ask yourself at what price would it be acceptable for you toss a toy away because it didn't work for you. For some people that may be five bucks, for others, fifty. But regardless, I wouldn't start off with a more expensive vibe right off the bat because of that risk involved and, at least from my experiences, you can read as many testimonials and reviews you want, but sometimes your mileage may vary in use... by a LOT. Even a cheapy vibe will help you understand what your body likes and while it may break down on you or not feel the greatest, the experience you gain is invaluable and will inevitably save you money when you start to find vibes that will really work for you (within a margin of error, of course, considering the amount of factors involved).
So, what I'm saying is, really analyze your body first before plunging on a purchase, especially if you want a more expensive vibe. Just don't break it down thinking that "I'm going to need a clit vibe, a gspot vibe, a pocket rocket, etc.", but expand on it. How do you like movement and/or vibrations on your clit, how experienced are you with thrusting, do you think you'd need something slim or thick to start with, would an inflexible material work for me or do I need something that will have more give to start? These are all questions that none of us can answer for you, of course. Since we don't know how your particular body works, it's hard for me to give you a specific toy recommendation since everyone functions differently and has had different levels of experience (P'Gell's article is very insightful on what it means to be a "beginner", by the way.
Here's what I recommend you to do. Analyze your body first, figure out what you'll need both for your person and environment (discretion, noise level, etc.), then what kind of features you'd like and then set a price bracket for each kind of toy you'd like to try. I say try to keep your entire purchase under 100 dollars, though. That should give you enough wiggle room to try two-five relatively inexpensive vibes without splurging too much. The reason I say a price bracket for each kind of toy is that a cheap vibe for each category varies depending on the technology and materials that goes into them, like how a plastic traditional vibe can be as low as six dollars, but a typical jelly rabbit's starting bracket would normally be about twenty-thirty dollars in comparison.
I'm just starting my collection too, like literally, got my last purchase a couple days ago, so I can relate. Before that I was researching and price and feature comparing over hundreds of vibes. While searching, I really was dead set on trying a variety of some of the cheapest things around with regards to my necessity, theoretically speaking, of course. However, after playing with my first vibe a few times and doing some sessions, I realized that what I was going to need to start off with was differing by a landslide to what I had chosen. I was able to save money on my overall purchase by limiting down what I needed despite the fact that each individual toy was more expensive than what I wanted. (Although, luckily, with how specific my needs are, I was surprised to find the very few that would work for me were very affordable in the end, so, you never know! Just keep looking~.)