Very good question! It is true that you can get desensitized to HCG but that is when you take normal/high doses, more than 1000iu per shot. At 250iu, you shouldn't have a problem. I have friends that are under the care of their HRT dr's, taking 250 to 500iu 2x wk, year round, and they don't have problems.
I think that HCG is a good idea on any cycle, not just the heavier ones. The way I see it, we work so hard on our gains, why not invest a few more dollars and help ensure the best recovery possible to help us retain what we've developed