I have an SW99, and I use it as my daily carry. I've fired glocks, HKs, Sigs, XDs, 1911s, etc.. but I always come back to my SW99. Like the Walther P99, it has the most ergonomically correct grip I've ever seen on a handgun. It also has good balance, and felt recoil is brisk but manageable. I especially like the decocker feature on my SW99 (not sure if the SW990L has that).
For what it's worth, however, the new Walther PPS pistol looks very enticing and I might have to buy one due to its better concealability.