If I'm not mistake, arent they the same springs? Ford Racing usually borrows from other companys and slaps their names on the products. Double check, it might not matter. And I doubt theres much of a difference at all, so go with the cheaper of the two.
I can only comment on the FRPP kit, which I have. The ride is very comparable to stock (SES). Little bit more 'jounce' on wash board roads or dips/bumps, but not aggressively so. You will NOT get supper flat stance in corners. I.E. it will still lean quite a bit (well, to much for my liking anyway) in hard corners. This should be expected as there not a super stiff spring. No complaints.
The FRPP kit isnt made by Multimatic. I really dont know why that name keeps coming up John. The FRPP strut kit is made by Tokico and the springs are made by Spec Racing to match them. The other kit is made by Dynamic Racing. Thats the track kit and not really suitable for street use unless you dont mind a harsh ride. For the cost, the FRPP kit "cant" be beat. It comes with everything new, struts, shocks, strut bearings, strut mounts, spring perches, boots, bumpstops, and hardware. Thats also why i can assemble them before you get them. The "sway" that one guy was talking about is because of having stock swaybars. If you add the swaybars, you wont believe the difference. The swarbars are for the sway, not the springs.
I forgot to add, i have one set of Eibach Pro springs that i have had for quite awhile that i could use instead of the FRPP if you want them and the cost is only $8 more. These only fit the 2006 and newer Focus'.