I have an opportunity to buy a Reefkeeper 2 and since I have never owned one of these devices, I wondered what the general consensus is. Is this the brand you own or would buy? I believe there is a newer version out, would you hold out and buy that one? It's being offered to me for 250.00 with a PH probe. I know the person well and I'm sure it's like new. Thoughts and advice please?