Delboy is pretty much spot on mate.
I had a BMW 328i Coupe on a 1997 plate a while back and chopped that in for a GTV Twinny. The GTV wasn't as quick as the 328i being only a 2 Litre, BUT it was still a great little quick car, had 130MPH out of it once, and it felt rapid as hell, completely standard Ph1 with 136,000 miles on the clock.
Shopping wise you can cram a weeks shopping in the boot, and unlike on the BMW it doesn't roll around everywhere because it fit's 'snugly' in. I'll use the word snug instead of cramped,
Guzzler wise mate, I had a 156 V6 which 'only has a 190BHP 2.5 V6, and I had a lead foot at the time and was returning no more than 270 miles to a tank and around 20MPG at best,
The GTV V6 has 220BHP and a larger engine, so I would have thought economy wise it would be about the same or worse. BUT, if you are commuting then you 'might' drive it slower...? Although probably not.
Then again, who buys a V6 and worries about consumption? Buy a diesel or keep the Beamer if it worry's you that much, but I don't think it does, so get a V6.
As far as commuting goes, they are both exactly the same apart from the engine size, so if you are worried about economy then get a Twinny, 155BHP, 0-60 in about 8 seconds, and 135MPH top end, and about 30MPG or thereabouts.
In reality I would highly recommend the Twinny, mainly because they are about half the price of the V6, and deliver better economy. Plus, they are pretty much at the final stage of their depreciation tumble now and a minter can be picked up on a late 90's reg for around £1500??? I bought my one for £1000 about a year or so ago, then sold it on for £1200. They are good cars that hold their value if kept well.
But, so are the V6's, and the V6's may actually even soar in value as they are more sought after...?
I say follow your heart mate, you will easily live with a GTV, they are not a 1960's British Leyland special, they are quite modern cars and it won't be breaking down all the time, you'll get used to the fact you can't use it as a Taxi, you'll make do with trunk space, and even if the missus gets pregnant tomorrow it will still be fine for the little 'un until he's about 2 or 3 or so. It's just adults who whine about leg room anyway,
Love the MR2 by the way, was going to buy a G Limited one a few years back, it was bright yellow but had seriously bad lacquer peel so decided against it, quick though, good fun to drive,
Here's a snap of my old one, loved it to bits. I'm looking for a V6 GTV at the moment but the last one fell through,