Avoid the Tomahawk. It's a piece of crap. Unstable, so you will not want to fly it for any distance when you get your PPL. All of them are ancient (they only made them for about 2 years c. 1980) and for some reason most of them are in a bad condition. They have a crap elevator trim, crap seals around the "hatch" (so they fill up with water during rain) and tend to have leaky filler caps so you get loads of water in the tanks.
The C152 is a lot more flyable, trims well, easy to land, and if you want a budget solution you will be able to do bimbling in it after the PPL.