suspension upgrades for xl1200c

I would like to upgrade my suspension. Looking at progressive 418 and 440 for rear. Does anyone have experience with these? Does anyone have other suggestions? Also, does anyone have suggestions for front end improvements?
Thanks

Progressive Is Pretty Good, Ran Them On My Last Sporty. Before I Decided To Make Struts. Now Thats All I Run. My Purpose Is Lowering And The Tightness Of The Rear. The Suspension Is Pretty Basic All Depends On The Type Of Ride Your Looking For And The Convenience Of The Adjustments.

THanks for the info - a follow up question

I like to the stock set up for most conditions. handling is great in turns and reasonable on most streets. Howdver, it is very harsh on square edged bumps. More pronounced, obviously, with two up riding. Did you find the progressive shocks helpful for either of those problems?

2 Up Your Always Going To Feel More Bumps. The Progressive I Think Can Be A Little Stiff But Thats How I Like My Ride, That's Why I Switched To Struts. Plus I Don't Get The Swaying In The Back End. Really For What You Sound Like You'll Want Some Kind Of Air Shock Were You Can Really Fine Tune Your Ride.

Thanks for the input. this is my first road bike - was an mx-er before this, so I am used to fine tuned suspensions. Your feedback ishelpful. Thanks