The reason you had the swollen upper lip is likely due to several factors: normal swelling after fillers, too much filler injected, and/or poor technique. Lip augmentation actually does take some skill. Not all injectors are created equal. It is more difficult to inject lips than nasolabial folds. Keep that in mind when you choose an injector.
All fillers will cause some swelling, but most patients are actually quite pleased with the results. Typically, I spend a fair amount of time talking to patients about how they would like to look. Some want a very pouty, full look, while others want a mild improvement. It is only through this personal one-on-one conversation that I can determine how much to inject in a particular area.
Hyaluronic acid fillers (like Juvederm, Restylane, Perlane) are the ones most commonly used for lip augmentation. Radiesse (calcium hydroxyapatite) is not recommended since it can cause lumps t o form in the lips. Silicone injections are also not recommended for the same reason. Some people inject fat into the lips, but I have personally had no experience with that procedure. Lastly, there is a relatively new lip implant, similar to a saline breast implant, but I do not use that technique and worry about the scarring. Good luck!