With the buggies
No matter which one you decide on if you get an RTR make sure you go back thru and and loctite all the parts because nitro will rattle bolts loose like crazy! If you want to get an RTR the Ofna's will be good, decent, solid buggies. If you want to get a kit. Again thats what I would recommend, you can't go wrong with the HB's D8 like both of us have said. Its a high quality machine for a small amount of money and if you get the itch to race you will have a competitive setup.(box stock) But again, check what the local hobby shop has parts for cause it always sucks waiting for 3-5 days for parts when you want to run. That will happen some anyway.....
You'll notice in my Sig that I have an AE truggy so I'm purely trying to give you my honest opinion just like I wish I had when I bought mine. I like my Truggy its easy to work on and AE's costumer support is second to none. IMO. Hope this helps!