It's not what guitar is best for a beginer. It's what guitar is best for you. That's the way too look at it.
There are people on here who will be able to give you better and more in depth advice than I can, as I'm pretty much a novice myself.
What I would say is this; go to a friendly guitar dealer and try every one in the shop that you fancy having. Don't matter if you can play or not, just sit with 'em and get a feel for 'em. You'll find that some are just more 'you' than others.
That's what I done anyway. I ended up with a Mexican Strat that I love playing....although I'm now desperate for a Takamine acoustic that I've been eyeing up in the shop.
Try before you buy and you wont go wrong.
Can't help you regards sounding like 'Purple Rain' though.
Craig.
Blind acceptance is a sign, of stupid fools who stand in line. John Lydon.
'Mod' is a shorter word for 'young, beautiful and stupid' - we've all been there." - Pete Townshend.