I have lurked this thread for a while.
I am a multi-discipline shooter - I will try anything once. Here are my OBSERVATIONS and OPINIONS...
1.) XTC - As a military vet I gravitated to this. I really liked the fact that I could use my AR in the same manner and format as my M16/M14. I am familiar with the positions, the distances, the range, and I could wrap my head around the scoring. What I was not familiar with was the absolute plethora of rules and the length that folks will go to to disqualify anyone with a better score. I also had too many modifications (that I gathered from actually using in the military???) that I was unwilling to remove to be able to compete. Easy to see why current service and recently separated vets left quickly.
2.) Silhouette - Who doesn't like interactive targets for score? I fricking love this except for two very major game-stoppers. I am NOT going to buy a period correct 50-123 Thumblicker with a scope that is pretty much useless for anything else and costs more than a NF. That being said, I am not going to waste my primers on a non-scoring event. I will still attend and pay in (even add some extra!) to tune in my hunting rifle before the season. These guys are great, I just can't afford the buy-in.
3.) SR Benchrest - Quite probably the biggest group of whiners, complainers, rule-mongers, and gear whores I have ever had the pleasure to be around. I fully and truly understand all of the above, but I can't be a participant. I know this will draw flame and ire - but I have yet to attend a SR Benchrest (over 20 of them, I really tried...) that wasn't a penis measuring event dominated by 5 or 6 guys that expected you to be just like them. All of the in/out rotation happens around this core group. New people come in and can't compete, they have salty mentors, and they leave. God freaking forbid you show up with anything over 6mm (unless it is a 30BR), and if it has a muzzle break it is better to just leave.
4.) LR Benchrest - Read SR Benchrest and reduce by 50%. There are better folks here, but the events are few and far between. There just isn't a ton of places with a 1000yd range set up. It is a lot more friendly for starter cartridges like 6.5CM, 308 and the like.
----- All of these ^^^^^^ practically REQUIRE an NRA membership for scoring. I refuse to send one thin dime to the NRA unless and until I know that it is not going into WLP and the Board's pockets. If I knew there was a way to be a member that monetarily supports only education and competition I would, but until that day arrives...... And these competitions take forever and a day. I don't like waiting an hour or more between strings for alibis and complaints, and I refuse to give an entire weekend to any single event. Maybe when I retire and the kids have moved out.
5.) PRS - I cannot imagine a friendlier and more open group of people to shoot with. I have shot PRS with an AR, a 30-06 hunting rifle, and a $3500 custom. None of that mattered except as conversation behind the line. There are a few ultra-focused individuals during competition, but I have yet to meet someone that wasn't willing to give tips and pointers after the match. It is, however, a gear-driven discipline where you sometimes are left wanting - the guy next to you having a tripod versus you stacking bags or contorting yourself into an odd firing position being an example. And it is pretty darn physical. But I can use the rifle I bought or built without complaints and snide comments.
6.) 3 Gun - I started this pretty early, but I was priced right out of the market. When I first began there was a fair chance that with practice and dedication you could score well. Now it seems to be a popularity contest. When Team Sig, Team Beretta, Team Vortex, and Team.... show up to every event and clean house because they have no budget and unlimited ammo and get to shoot every day, you find out that you are just there to support their budget. It is fun to watch, but not nearly as fun to be in competition with 20 people for 10th, 11th, 12th place and so on.
7.) F-Class - I would really like to try this, but I cannot drive 500 plus miles every weekend.
So there you have it. My take as a short-time (~10 years) participant in shooting sports. Take it all with a grain of salt.