Depends on your age. If you are under 25ish I'd definitely be looking for varied experiences in aviation. Going for TP might be a bit extreme, but the 145 is great to fly, you'll get lots of landings and experience of flying, rather than button pushing and you might be knackered, but not bored. In this game, variety is very important. Following the line across the Atlantic might sound attractive (Long haul is definitely something you should do) but like most things, gets boring after a while. Frankly, I've been incredibly lucky to have done everything from GA to widebody and feel sorry for anyone facing 20/30/45 years of Airbuses.
If you're closer to 30 and/or have domestic commitments, big shiny jet is the way to go, I'm afraid.