Thanks [MENTION=4447]chris1888-197[/MENTION]. The handling is quite different in a number of ways; the Astra is a very heavy beast but has been equipped with a VERY effective LSD. It's so very different to the H in this regard so you can take the car into corners at pretty high speeds and actually accelerate through the corner with the LSD actually hugging you into the it. It actually rewards you the bolder you are and it's quite a thing to feel in action and it inspires a lot of confidence. It's also gifted with a huge amount of torque. This is fantastic for the ease in which you can access useable power so there's not quite the same need to work a gearbox as there is in some cars. However, this does also mean that you do have quite a significant amount of torque steer which can make the car quite twitchy, particularly on poor road surfaces (of which there are a bundle up my way). Also, tyre choice is really really important with the J and it eats front tyres. With the wrong tyres, it's hard to get the power down in the lower gears and will tramline into third gear. (Also expect to pay around £200+ per tyre for one of the choices that will actually lessen this trait considerably.) Mine had the aero kit which includes lovely 20" alloys but the car never felt like it was crashing over road surfaces, though it could be a little harsh for some on the VXR mode which also stiffens the suspension as well as increases the throttle response and weights the steering. It's really not bad though and the Recaros are superb so you're both supported and nursed by these. There is some noticeable turbo lag as you'd expect but this can be negated with a proper map. Genuinely though, it's a really really refined car which handles very well and delivers bucket loads of power in a very linear fashion, you'll be at three figures between glances at the speedometer and you'd never even realise it...and it never seems to run out of accelerating ability in any gear. It sounds freaking epic under hard acceleration (genuinely one of the most fantastic sounds you'll hear), it's a kind of roaring whooshing sound that I've never heard in another car. Really really loved the car...as you can probably tell!
Comparatively, the Clio handles beautifully without the need for electronic wizardry like the J's LSD. I haven't had the Clio long enough yet to really test the boundaries but, in my experiences to date, the Clio has a beautifully balanced chassis. You can genuinely throw the car into corners at high speeds and the car really doesn't ever seem to become unbalanced. I already find myself cornering in higher gears in the Clio - this is because it'll handle it and i find that I can access the power easier on exiting. I realise that this sounds slightly backwards but that is my experience so far. In the J, gears 4 & 5 are, quite honestly, pointless if you are accelerating to legal limits quickly. You'll just hope from third to sixth every time. I guess it's got a lot to do with the gearing of the two being quite different. I find the lower gears much shorter in the Clio compared to the J. The engine is noticeably less refined but likes being revved harder and the power can be accessed easier (naturally aspirated vs turbo really) and it doesn't sound as nice as the VXR from the cabin which really is quite refined. Again, vehicle size will come into this as much as cost and sound deadening. The Clio's considerable loss in torque compared to the Astra is very noticeable going from one to the other. This isn't a slight on the Clio, just the reality. I am just trying to adapt my driving style and explore the limits of the car at the moment (in a safe and legal manner I should add). This has pros and cons, the biggest pro is a do not miss the torque steer of the VXR while in VXR mode on a rubbish surfaced B road!! Oddly perhaps, the Clios steering feels heavier than the VXRs. This is neither good nor bad really, just different. The gearbox on the Clio is absolutely lovely. Really nice quick changes are possible and the throws between gears is both short and satisfying. The throws in the VXR are longer than an Olympic sized swimming pool but these are immediately and quite cheaply tackled with the addition of an M Tech short shifter.
I can answer any further questions you have on the two if you like, please just ask, and I hope that I've answered your question fully.
(This is another picture of mine prior to some subtle mods)