[thstone]

The question is whether you like the ride comfort and ride height of your existing US M030 setup?

If so, then replace the shocks and you're done.

If not, you'll have to trade off whether the possibly slight additional drop from the ROW M030 is worth the $450. Or if you want even more drop, then maybe the $250 H&R's come into play. Both of these options may change the ride comfort.

Comfort is highly subjective so only you can decide if the US M030 is comfortable enough or if you think that something stiffer would be ok. You might want to find someone with a ROW M030 and/or the H&R's and get a test ride to see what you think before you commit.

Topless was kind enough a few years ago to give me a ride-along in his car when I was considering the move to PSS9's - afterwards I was convinced that was the way that I wanted to go.