'tis a bad thing to ask "how good is a..." when you already have one.
After you've already made the plunge for gear, you have to let you own ears decide if it works for you.
A lot of decisions are made here, right or wrong, without actually hearing the product. The rule of thumb with audio is kind of "99% of the time, you get what you pay for."
To clarify - if Samson, or Nady or whatever were in that 1% of awesome "bang for the buck" products, it would be all over this forum.
Not to say that your board sucks - just that
you have to decide at this point if it works for you. If it sounds good, it is good.
More clarification - from a personal experience.
I do a bit of freelance FOH mixing for local clubs/bands. One of the club systems uses a Peavey Unity mixer. Whatever. I just set up the system and do my job - I'm getting paid either way. One night the Peavey goes down. Actually, it gets soaked as there's a leak in the soundbooth and we get a huge downpour. Luckily, one of the bands has their rehearsal mixer with them, a Behringer Eurorack something or another. I hook it up and DAMN - I'm able to get the best sound out of it that I've ever had in the room using the POS Peavy.
(As we know, Behringer is much maligned around here.) It worked great for me, so - it's all relative.
Why am I typing all of this? Uh, I dunno.