I've used Speardiver wetsuits and they are very comfortable and durable: I had one for almost 5 years using it twice a week and it held very well. The Mako seal thing is pure marketing. As Dan said, the open cell itself does the sealing.
Last but not least, Yamamoto 39 is the cheap version of Yamamoto. It compresses quite fast. My recommendation between those two would be a Speardiver Wetsuit.
Keep in mind that you'll need some lube to put on your open cell wetsuit. But that's not a problem. You'll get used to it and it must be done just once, because the wetsuit is so comfortable that you don't need to take it off until you are done diving.