have been reading a lot of comments on purchasing new regulators etc. unbalanced/balanced etc. I was looking to get into a relatively inexpensive REG but still something with good performance and reliable. I have been looking at the MK2/R190 by ScubaPro. I understand its not balanced and piston style can be a bit of a pain to clean when diving salt water. Also most of my diving consists of vacation, lake, quarry, pool (dive at the local aquarium clean the tanks/pool to get more diving time and for fun). I do enjoy a deep dive (never past rec limits) once in a while. Any ideas? I heard this is a good REG.