Because of my fabulous experiences with Monster, I've built a few myself, and I can say, the one in my 87 4x4 held up fine for 2 years with a 350, and 37's, and I wheeled it and drove it every winter. It only had a five gear planetary, Sonnax VB kit, and corvette servo.
If you want one for the future, why not grab a good core and rebuild it yourself? There's alot of write ups out there, and it's pretty easy. It really doesn't even require any special tools for the most part. You probably don't have snap ring pliers, or a press, which are the two hold ups, but pliers are cheap, and there's ways around the press.