The new Tenth Doctor adventures star Tennant and the rest of the cast, yeah. The first set is Tennant and Tate, the second set has Tennant and Piper, but also Camille Coduri (Jackie). The third set is back to Tennant and Tate, but this time with Cribbins (Wilf) and Jacqueline King (Sylvia), so they're bringing the families in as well.
If the two of you like new Who in general, there's some great options beyond that, anyway. Some people will point you to the Time War and stuff, which is really new series backstory, but in the realm of full cast audio plays, there's also:
- The Diary of River Song, which is an entire series of River on adventures with past Doctors, with Alex Kingston and whichever Doctors/companions she's crossing paths with
- A UNIT series with Kate Stewart and Osgood
- A Doctor's Daughter series starring that one-off episode character as the lead on Doctor-like adventures
- Bizarrely, even a 'Tales From New Earth' series supported by returning cast members from the New Earth bound episodes of Tennant's era.
- A couple of War Doctor stories John Hurt recorded before he passed, and also some 'War Master' stories set in the Time War with the Master we see prior to Simm in series 3 before he legs it and wipes his own memory.
Some of that all crosses over, too, like the River Song series eventually features the UNIT cast, etc etc. Probably the River stuff is the most worthwhile to a Nu-Who fan outside of the main Doctor stuff, and only if you like that character, but yeah. I think a lot of the Time War stuff is a bit long in the tooth, tbh.
The River stuff so far has her crossing paths with the 4th, 5th, 6th, 7th and 8th Doctors... and there's a story where she battles 4 incarnations of the Master at once, including Missy, all played by the original actors. River really wore thin for me on the show, but she's
more here - they sort of really lean into the concept of River as a James Bond-like figure, and she gains a lot from it. Growth like that after-the-fact is really what Big Finish does at its best.
There's also loads of one-offs, like Rose stories with her running alt-universe Torchwood (with relevant cast returning), a story about Christina from Planet of the Dead(??)... lots of mad stuff like that.