Thanks for the help Justinslow, that's all I really wanted to know!
Not sure why most other messages are fairly aggressive/ confrontational. Didn't realise people new to all this couldn't really ask questions without getting their head chewed off.
Any aggression is purely inferred, not implied. You asked a question, I gave you a simple, honest, straightforward answer. You may not like it, but it remains the same, whether I put fancy embellishments on it or not.
There's a bit of history to this debate and perhaps you could have spent a little time researching it here because it is a frequently-asked question ...... MOD EDIT...
We've done the physics here, I've quantified the differences, we've had an intelligent and robust debate about it, yet some people will always walk away saying that they can feel the difference even if physics shows otherwise. With new wheels their bikes steer more positively, is more responsive and attracts more members of the opposite sex. Yet, when you ask them to quantify such vague concepts they will bluster and say that if the rest of the world can't feel it it doesn't mean they can't, etc etc.
Joffey's answer was perhaps a bit kinder than mine but read between the lines - it will make no difference.
Since you are new here I'll repeat the truth about wheels for you.
1) Weight saved on wheels is no different from weight saved anywhere else on the bike.
2) No matter where on the wheel the weight is saved, it makes the same as weight saved anywhere else on the bike.
3) Aero wheels will save you a couple of seconds over a 40k time trial if, and here's the crux - if you can cycle fast enough so that aero drag is significant. Since you are a self-confessed newbie, you don't qualify for those benefits.
4) Some people will say that the pro's use fancy wheels and therefore it is good for you. Pros ride fast, have free wheels at their disposal and get paid to emblaze sponsor names on wheels designed primarily to look like rolling billboards. This doesn't make them beneficial to you unless someone pays you to make their name go round and round.
5) Heavy wheels take longer to spin up but the energy is not wasted. When you coast, they return the favour. There is no energy lost.
6) A bit of weight saving will make it every so slightly easier to climb but you have to put it in perspective. 500g off a 90kg package is insignificant. Further, us humans can't detect small speed differences. If the wheel (or the 2l Coca Cola bottle on your frame) is slightly heavier, then you will simply cycle a teeny bit faster. You won't feel better or worse for it.
7) Aero wheels are, ironically, heavy by definition.
8) Aero wheels are not durable like wheels with alu rims and 32 spokes.
9) People who spend lots of money on wheels will always, yes always, post-rationalize it. None of them retain perspective after spending so much money.
10) Your thoughts on front wheels vs rear wheels have no scientific reason to be valid. Weight is weight, whether you tow it with a trailer or carry it in your pocket or pack it all into a unicycle's only wheel.
11) If you want to see the maths on this, search for F=MA on this forum, there's a long debate there somewhere with all the irrefutable sums and lots of lapdog who claim they're exempt from the laws of nature.
Go for a ride, drink a beer and find new places for your bike to take you to.
