I have had both types of reconstruction so know a bit about this! I had my TRAM in 2003 and a lat dorsi in 2010. By far I am happier with the result of the TRAM!! The reconstructed breast is nice and soft, feels natural and feels like a part of me. The lat dorsi one is firm (due to the silicone implant) and when I lie down, particularly if any part of the breast is touching what I am lying on, it feels horrible - like I have a rock underneath me. It still looks good but just doesn't feel like part of me.
I know that there is a longer recovery after a TRAM but I would choose it hands down over the lat dorsi! You also get the added bonus of a nice flat stomach :)
Good luck with your decision,
Louise