Ok, here's an update on the Samson Stage 5H. I used it again today for a couple of hours and it eats 9 volt batteries. My Nady DKW Duo is much lighter on battery drain. I can use a 9 volt in the Nady for 10-12 hours maybe more. The Samson seems like it uses up a 9 volt in 3-5 hours. The handset and receiver are plastic, not metal. The range is very, very good. You can go far away from the receiver with no problems at all.
The Samson is quite a bit more sensitive than the Nady which is better for singing, which is what I do. For talking and announcements it's not as much of a factor and the Nady is just fine for that.
Surprisingly, the Nady seems to be a bit more sturdy than the Samson. I would definitely recommend the Nady for someone who wants something really cheap, but decent. At $40-$50 it's well worth it. I've had mine for around a year I think.
One other wireless mic system I forgot to mention is the
Vocopro VHF-3000 dual handset wireless for $89. I've used it several times and the handsets are very solid, made of metal. Sound quality is very good too. If you want a middle of the road mic, this is it. I could see it lasting for years and years because it's well made.
Don't let these guys tell you that you need a $300 or $400 wireless, it's just not true. The Vocopro is a good quality product for a fraction of the price. I've used my Nady over and over and over and . . .I used it the other night in front of 100+ people with no problems whatsoever.