Tilt EQ has gained popularity in recent years and there is a lot to be said for this simple, broad brush approach to EQ. Designing tools which offer no more control than brightening or darkening content while maintaining the internal balance of the frequency content of the material is understandable in these days of infinitely powerful tools. An old phrase about "giving someone enough rope" often springs to mind and this less is more approach to controlling frequencies definitely has a place alongside powerful digital tools.
That being said I have only recently tried a dedicated tilt EQ. Prior to this I have exploited the unusual flexibility of EQIII to offer a similar, though less convenient, tilt EQ for free.
EQIII has Q available on its shelving filters. Not all EQs offer this. For example Channel Strip has a fixed Q on shelving filters. Many EQ plug-ins do offer Q on shelving filters but the Q control range on EQIII goes to a very low (broad) value of 0.1. Comparing this to other quality EQ plugins I can't find another which goes this low. This gives more than enough Q to accommodate setting up very gentle boosts and cuts between the high and low shelving bands to make a tilt type curve using stock plug-ins. The output control can be used to compensate for any change in gain and by putting alternative EQs in the A-E and F-G insert slots and using shift+2 and shift+3 you can quickly AB alternative settings.
This won't be for everyone. A dedicated Tilt EQ is more convenient and may sound better. Some will insist that linear phase EQ is necessary (EQIII doesn't null perfectly) and Tilt and linear phase EQs are available if you want them, but if you want to try this helpful approach to EQ with tools you already have, give it a go.