Commercial and public safety two way radio system installers have been using crimp on connectors for a very long time without issue.
The people that usually complain about crimp connectors being an issue are often old timers that want all technology to be stuck in the 1950's.
A properly install crimp connector will work just fine -if-it-is-installed-correctly-.
If someone gives you crap about it, walk away, you don't need that sort of negativity in your life.
I've been using crimp coaxial connectors for years, both when I was in college in the professional video industry and the past 20+ years I've been working in telecommunications.
Soldering is fine. It won't hurt to solder connectors if that's what you have. I've soldered PL-259 UHF connectors as well as center pins on N connectors.
Compression type connectors, like the F connectors used by the cable TV companies work fine at well up to 1GHz. If they didn't work, the cable TV and satellite TV companies wouldn't be using them. Again, using the correct tools, techniques and connectors for the cable you have is the key to it working right.
I've done a lot of Heliax connectors, too, and there are versions that need to have their center pin soldered and those that don't. Again, if they didn't work, they wouldn't be sold and used in the industry.
With the right test equipment, you may be able to see a very slight difference between a crimped, soldered or compression fitting. But really, it's probably tenths or hundredths of a decibel, and without lab grade test equipment, you'll never be able to tell the difference.
What matters more is like I said above:
Use the correct connectors for the coaxial cable you have.
Use the correct tools for the coaxial cable and connectors.
Practice, practice, practice, then when you think you are good, practice some more. Buy some extra coaxial cable and connectors so you can do this.
Also critical is proper waterproofing techniques. It doesn't matter if you connectors are soldered, crimped, compressed, welded, or installed by a virgin on the vernal equinox with solid gold tools dipped in holy water, if you don't properly protect them from the environment, it will fail.
If you are curious, take a look over at
www.tessco.com and see what they sell. Tessco caters to the commercial and public safety radio industry. They sell a lot of crimp connectors.
I'd also say "good job" for wanting to do it yourself. Once you learn how to do this, you'll find it's pretty easy to do. It's also a lot cheaper than buying the pre-terminated cables.
And, ignore the people that give you crap for using crimp connectors. I assure you, they don't know what they are talking about.