Western saddles are used for western riding and are the saddles used on working horses on cattle ranches throughout the United States, particularly in the west. They are the "cowboy" saddles familiar to movie viewers, rodeo fans, and those who have gone on trail rides at guest ranches. This saddle was designed to provide security and comfort to the rider when spending long hours on a horse, traveling over rugged terrain.
There is no need to buy some big heavy saddle if your just planning on trail riding.
If that's what you want, I'd suggest an Abetta or other synthetic saddle. Mine held up great, it's VERY light weight, pretty much water proof. Sure, they aren't SUPER high quality, but they get the job done! I love mine, however, it's a bit too small for me now:(
I have a Fabtron leather/cordura trail saddle that I bought used and it is in great shape. That thing is sturdy and as rock solid as any all leather saddle I have owned. Weighs 25# and is perfect for me since I have issues that prevent me from lifting the heavy saddles anymore. I highly recommend them. Big Horn and Abetta saddles are good quality saddles too :)
I love my Dale Chavez saddle. It is the most comfortable saddle I've ever ridden in and I wouldn't sell it for anything. The main thing about the Chavez saddles is that he makes them with a narrower twist than most western saddles which makes them comfortable for small women with short legs. Most western saddles make me feel like I might as well use the dining room table for a saddle, they're so wide, but my Chavez is SUPER comfy. They are very pricey if you buy a new one or have him make you one, but used they can be had fairly reasonably, WHEN you can find a used one for sale. They are also GORGEOUS saddles and that doesn't hurt a bit, either.
Your question is going to receive broad answers. For me, Crates are nice and comfy. I use an arab tree Crates on one of my qhs. I do have Tuckers and love them too. I have to say my Tuckers are a little bit more comfy than my Crates. If you buy a new Crates, plan on saddle buttering it a handful of times to get the leather supple. Both brands have held up great. They weigh around 25-30 pounds. New they start around $1500 but used you can get either brand for about $700-$900 in clean condition.