Rating: - Also get a USB (mini) cable! It's a 'must'
I won't be long - enough reviews are available here, so let me just add a couple of things: you'll definitely need a USB (mini) cable with your Garmin Sat Nav, because

1) with a USB (mini) cable, you CAN recharge your Garmin Sat Nav with your PC/Mac, which is not clearly mentioned in the user's manual. Remember, your Sat Nav doesn't come with this cable or an AC adapter (you need to buy them separately!), so you can't recharge the battery until you connect it with the vehicle power cable.

2) with this cable, you can also download the latest map, update the software, and configure the Sat Nav via Garmin's website. You'll need to do all this (and it's simple) if you want draw out the maximum performance from your Sat Nav!

Hope this helps!

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Rating: - Great little device, perfect for EU including Poland
Fabulous little sat nav. Normally I buy the more expensive items, thinking the cheaper ones won't do the trick. BUT, I bought this and it is fabulous (the EU maps are really well done).

It took a while to get locked on for the first couple of days, but after that, quite quick. Polish navigation is very good, handling little places such as Kurki near Dzialdowo (Mazury) etc.

I'm not sure the wide screen would add any value.

Battery life is good - if not doing much work, i.e. reasonably straight path and no recalculations etc it seems to last about 4 hours. If complex mapping and tall buildings on either side, then battery life wears out much faster.

Fabulous value. I would buy this again.

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Rating: - Garmin Nuvi - A good entry level GPS
I use the Garmin 250 for my job, I do a lot of travelling up and down the country. The Nuvi is quite a bit smaller in size than other Garmin's with a little more care taken on style. Its quite light and solidly built with a large widescreen. Getting into position and mounting in the car wasn't as complicated as I thought it might be.

The GPS is very easy to set up and the user interface is again very easy to understand and get going.

The maps themselves are easy on the eye and your route is diplayed with a thick red line thats easy to see on a glance. the only problem I have with the thick red line approach is it tends to mask busier junctions (where a lot of lines suddenly appear on the map). Voice commands however are perfectly clear and precise and if you're in doubt with the map you can rely on the aural instructions to clear things up. The Nuvi could have benefited from further instructions, such as the nearest petrol station (you have to rely on icons).

The Nuvi comes with a few added extras such as a currency converter, city guides and more supplied on the SD card.

Overall the Garmin Nuvi may not be the ultimate GPS system but for the lower price it offers a no frills approach with an easy to use Nav system.

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Rating: - No frills, but it works
I paid just over £80 for my Nuvi (including postage) and I could not be more pleased. Yes, it is basic compared to some, but it works and is simplicity itself to operate.
The windscreen mount is first-class - solid as a rock and easily removed without leaving a tell-tale mark.
For the money I doubt this could be bettered and even included European mapping.
Highly recommended.

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Rating: - Garmin Nuvi 250 Satellite Navigation System With European Mapping
I'm caught between a rock and a hard place with this. Overall I am pretty pleased with it. But sometimes it can't make a distinction between 'turn left' and 'keep left'. For example, on a jagged bend it will tell you to 'turn right', even though you are following the same road. And instead of 'turn left' onto a minor road it will tell you to 'keep left.' And sporadically tries to send you the wrong way up one way systems! But functional overall, as long as you acknowledge it doesn't know all there is to know.

The plus points:
Easy to use. Good value - compared to other UK & Europe options very reasonably priced. Easy navigation - on screen details is good and voice commands clear. Great built in info.

I'm pretty sure that as we use it more, we'll get used to it, but for something you can pick up out of the box, plug in, and use, pay the extra and get a Tom Tom. Or save your money and use streetmap.