Either one will have you looking at reloading pretty quick like. Factory rounds for them add up quickly. There's a lot to be said for the .357Mag option since you can plink with .38Spl for reduced price. On the .45ACP front you may also want to consider the Jerry Miculek 625 special edition.
You're certainly jumping around a lot from the very classic 29 to that funky looking flat side barrel option.
You may want to check Kodiak Outpost. Last I saw he still had a TRR8 for sale at a reduced price. If I didn't already have a couple of .38/.357 revolvers I'd be interested in that one he's got.