Wow...3 pages on top links. Guess it's still a hot topic!
FWIW I've jury-rigged two different non-check valved cylinders into place. One was a freebie from a friend (that turned out to be MUCH too long for most of my applications), and the other was just inexpensive and I needed something to use immediately rather than wait for the correct size CCM unit (as I mentioned I have a side link from them, and have nothing but good things to say about the CCM hydraulic set up or cylinders).
My jury-rigged cylinders have not had any appreciable leakdown, even with heavier (800lbs plus) implements. Regarding shock loads, I tend to be adjusting it so much it really doesn't seem to matter. In a perfect workd I would definitely get a CCM top link with check valves, no doubt about it. But, right now they're not available, hence this post.
It's good to hear good things about Redland Hill. Their cylinders may be "less than perfect" as they don't have check valves, but if thats not a priority, or you need one immediately, it sounds like an OK place to deal with.
Thanks for your advice all around!
Couchsachraga
P.S. MadReferree-I think part of the reason a few folks took issue with your post is you always have extremely well informed, clear posts, usually without any bias at all, but when it comes to top links you VERY firmly believe they should have check valves (or at least that's how it comes across). I'm not saying that's good or bad, just that's how the posts tone read.