Over the last few weeks I have looked at various BCD's and one that really sticks out ( and feels great on) is the Ranger. . . . . I expect I will be in the range of 30 dives a year ( half in warm water and the other half drysuit diving in cold water) I am questioning if I really need the Ranger as it seems almost to be a Tec Bcd. I will be going on my open water drysuit dive in a week and will find out what I need for weight then but my instructor said he is guessing at about 30 lbs.
The Ranger is a great BCD. It was my first BCD, I still own it 12 years later. Zeagle customer service has been absolutely superb, and I have seen no change after Huish bought them.
Having said that, I would not recommend it for your intended use, as stated. Rather, before making a purchase, I would try a diving a steel backplate and a 30-35lb wing, in your drysuit. The issue with the Ranger is that it is inherently positively buoyant. You end up adding lead just to compensate for that buoyancy. I much prefer reducing the amount of lead I have to add, and going with a BCD that is inherently negative (a SS BP with an appropriate wing) is one way to do that.
At 44 lbs of lift, the Ranger is oversized for single cylinder diving. Look at some (properly weighted) divers in the water in a Ranger with a single cylinder, and notice the conspicuous taco of the wing. Most divers who profess love for their Ranger seldom see themselves in the water.
I have often said that the Ranger is a very comfortable fitting BCD - on the surface. It feels like I have put on a tailored sport jacket. And, that has absolutely nothing to do with its functionality nor does the 'feel' on the surface really mean anything (unless, possibly, you are hiking in scuba gear).
If you buy a Ranger, as a newer diver, it won't be a bad choice. You won't be unhappy. I personally think a wiser choice would be something less 'floaty'. That was the path I ultimately went down, and my Ranger sits unused in a closet.
I'm wondering if there are other divers out there using either of these for warm and cold water diving that could give me their thoughts?
I have used my Ranger for both and it worked well. Now, having said that, a note of explanation about my comment on Zeagle service:
Diving a drysuit in my Ranger, even with a steel cylinder, I needed an enormous amount of added weight (the 30ld your instructor mentioned is in the ballpark). It was so much weight that I essentially overstuffed the integrated weight pockets on the Ranger. Over time, this caused the fabric around the pockets to tear. Several years ago - after I had stopped diving the rig - I decided to have the tears repaired, in anticipation of selling it in the future. Because I bought it new through a local shop, I was able to obtain a copy of the sales receipt. I contacted Zeagle, who provided a code (RMA) and I shipped the unit to them. They repaired it superbly, and quickly, and the only thing I paid for was the shipping from NC to FL. So, I have nothing but good things to say about Zeagle service. And, yes, the Ranger is well built. But, it is not so well built to withstand the effects of stuffing the pockets with the enormous amount of weight necessary for diving a single cylinder with a positively buoyant BCD and a drysuit (nor is any other fabric BCD for that matter, I am not picking on the Ranger).
My bottom line - for what you describe as the kind of diving you are doing, at least consider as steel BP. Ultimately, it is your money, and you will spend it as you choose. But, having been in almost exactly your situation a number of years ago, had I to do it over again, I would not buy a Ranger.