Good on ya. The vendors here not only provide you with a lot of good info, they also pay a lot of bucks to be site sponsors. So I like to pay them back with a little support, and good feedback on their products, for others. Some may call that "fan-boy-ism"; or characterize it as poor reading comprehension. It is neither; if I have a choice of where to buy, I will support vendors who go the extra mile and support me.
Because of the anonymity of the internet, you have no idea whether someone has a legitimate question, or is guerrilla marketing for another vendor, or just plain trolling for the hell of it. A question may be perfectly innocent, or have some hidden agenda. You just don't know.
When I worked at a specialty running shoe store, I would get these people who would come in, and ask to be fitted for a running shoe. So I would do a gait analysis, and a foot exam, to see what brand shoe would fit them and their running style the best. Sometimes this process would take 20-30 minutes. They would then say, OK let me think about, and then go out and buy them on line, for a few bucks less. So I just gave them my time and knowledge (not to mention handled their sweaty feet) and they pay me back by buying from a competitor. I don't know about you, but that pisses me off.
In the same vein, if I paid to be a site sponsor, and freely gave of my time and knowledge to others, to help them determine what their NV needs are, and then they turn around and buy from another guy, just because he's a few bucks cheaper, I would not appreciate it. So yeah, maybe I stepped on this guy's thread a bit, but I make no apologies. Vic, Sam, and LowDown3 are contributing members of this forum and I support them to the max. So if you want to know who the good companies are, check out TNVC/NGI, and JRH Enterprises. If ACME NV wants to come on here, be a site sponsor, and provide good info, then we'll talk.
I know it's the info age, and lots of folks seem to think that they are entitled to all this knowledge for free. I am old school, in that if someone shares their hard-earned experience with me, I feel obligated to them for helping me out. Obviously, opinions do vary.