Generally, unless noise is a problem you'll be happier with a glow fuel powered plane.

Moving up from a 2 ch you will probably need to start with a near trainer-like aircraft. There's a HUGE performance difference when moving up from most of the current 2 ch planes. Something such as the SPAD 'Debonair' would be appropriate. You'll also be best off getting bit of assistance the first few flights...

Everything you learned with the 2 ch plane will still apply... the difference is kind of like moving from a pedal car to a Ferrari though. you'll be VERY likely to overcontrol and overcorrect.)

The budget shouldn't be a problem... $120 for a decent 4 ch radio system. $70 for a decent .40 class engine, and the airplane istelf... could be a scratch-built from plans at www.spadtothebone.com. (CHEAP, easy durrable.) Leaving a LOT of $$ available in your budget. [img]i/expressions/face-icon-small-smile.gif[/img]

There's also the package deal on the Avistar... Appx $320 includes radio engine and airframe... add fuel and a bit of ground support equip and still be under $375.

(Lots of options...)