We have tried a number of masses (and, like Phil, I mix 'em up). The most popular seems to be Chris Walker's Belmont setting, which we use as the 'standard' setting on Sundays and it goes well, generally unaccompanied, at mid-week masses, funerals, holydays etc. On those occasions, the missal chants (English, Latin or mixed) also get a look-in - usually unaccompanied (with the exception of the missal chant English Gloria setting, which is, I think, dreadful).
We tried the Psallite Mass (Collegeville Press), but it was not universally popular, Paul Inwood's revised Gathering Mass, but everyone just got confused (rehearsals went well, but it kept falling apart with the congregation), and a few others. Funnily enough, the one that really raised the roof at the Christmas Night Mass was the Missa de Angelis Kyrie, when I thought that there would be no-one around who would remember it! James MacMillan's Gloria and Agnus Dei from his Mass for Blessed John Henry Newman are pretty popular with everyone, and they get an outing at big events , but not teamed with his Sanctus, which does not go well with our congregation. The biggest problem with MacMillan is that Boosey & Hawkes issue (relatively expensive) congregation cards and my search for print permission (we do the same as Nick does with printed sheets with the music on) was a major trial because they just did not 'get it' (the the staff are very nice and helpful though!). I would love to know how many full music copies have been sold since the John Henry Newman Mass was actually published.
I used Christopher Walker's Glastonbury Acclamations for a huge deanery mass (2,600 in congregation) and they went well, and Alan Smith's Pershore Mass Kyrie & Gloria and Peter Jones's St Chad Acclamations for the rededication of our city's mother church and (i) they went well and (ii) they are used in the parish. I have high hopes for Martin Barry's new Mass (not yet published, but tried out at the SSG WInter Assembly in November).