Do any keyboards have convincing electric guitar sounds?

I’ve got a yamaha YPT-300 and the acoustic guitars are actually believable, but the samples for “distorted guitar” and “overdriven guitar” are just crap. It’s really not just the tonal qualities of the sample, it’s the fact that every time you hit the same key you get the [...]

On a piano, is it really necessary to have all the three pedals for a beginner?

I recently started learning piano and want to buy a good keyboard with all the features(weighted keys, touch sensitive keys).. I really liked the yamaha YPG625 model, but it comes with only one foot pedal.
Is it really necessary to [...]