I have never shot a 45 colt gun, but I too like the 357 - U can also shoot 38 in it for practice and for money savings. I'd recomend that.
Be aware that many shops have a severe bisa - people here have talked about biases towards the P99 from gun shops recently. Some are pushing XDs over Glocks now.
Some people who work in these shops don't even know what they are talking about sometimes.
Get what U like