I will personally review the HTC Mteor here for you. The HTC Mteor is a windows based mobile phone and does support 3G unlike other similar models or competitors.
The Mteor has a joypad which works well and allows you to navigate the mobile comfortably and with good responses too.

The Mteor is thinner and slightly taller than other windows smart phones and comes in at 112 x 49 x 15 mm and 120g.
It boasts the following:

GENERAL
2G Network GSM 900 / 1800 / 1900
3G Network UMTS 2100
SIZE
Dimensions: 112.4 x 49 x 14.8 mm
Weight: 120 g

Size is great and fits in pockets nicely although because there is no cover over the buttons it is so easy for the buttons to be accidently pressed whilst in the pocket.
DISPLAY
Type TFT, 65K colors
Size 240 x 320 pixels, 2.2 inches, 34 x 45 mm
- 5-way navigation button

Display is nice and bright and of a good size
SOUND
Alert types Vibration; Downloadable polyphonic, MP3 ringtones, composer
Speakerphone: Yes

Sound is good and has a good volume on it - The speakerphone also works well
MEMORY
Phonebook holds Practically unlimited entries and fields, Photocall
Call records Practically unlimited
Internal 64 MB RAM, 128 MB ROM
Card slot microSD

The phonebook on this phone allows you to hold practically unlimited entries and allows you to store the following:
First Name:
Last Name:
Work Phone:
Mobile Phone:
Home Phone:
Custom Ring Tone:
Picture:
Email:
IM:
Work 2 Phone:
Home 2 Phone:
Company Phone:
Categories:
Pager:
Car Phone:
Work Fax:
Home Fax:
Assistant Phone:
Radio Phone:
Email 2
Email 3:
IM 2:
IM 3:
Web Page:
Company:
Department:
Job Title:
Office Location:
Street:
City:
State / Province:
Zip / Postcode:
Country / Region:

Home Address:
Street:
City:
State / Province:
Zip / Postcode:
Country / Region:
Other Address:
Street:
City:
State / Province:
Zip / Postcode:
Country / Region:

Notes:
Nickname:
Birthday:
Anniversary:
Manager:
Government ID:
Account Name:
Customer ID:
Spouse:
Children:
Assistant:
As you can see from all the above - This is one of the best contacts list I have ever had on any of my phones although there are some sections which I wouldn't use and don't know what benefit they have like the Government ID section etc.

DATA
GPRS Class 10 (4 1/3 2 slots), 32 - 48 kbps
EDGE Class 10, 236.8 kbps
3G: Yes, 384 kbps
Bluetooth: Yes
Infrared port: Yes
USB: Yes
CAMERA
Primary 1.3 MP, 1280x1024 pixels
Video: Yes

FEATURES
OS Microsoft Windows Mobile 6.1 Smartphone
CPU Samsung 2442 300 MHz processor
Messaging SMS, MMS, Email, Instant Messaging
Browser WAP 2.0/xHTML, HTML (PocketIE)
Games: Yes
Java: Yes, MIDP 2.0
- MP3/AAC player
- T9
- Organizer
I found that the battery life was rubbish on this phone and a full charge would only allow a maximum of 24 hours standby and if used probably a maximum of 2 hours. It also lacks a front facing camera so no good for video calling and connecting it to the internet was a total nightmare - Even my network provider couldn't get it to connect for me. It also doesn't have Wi-Fi which is a very big down side.

Anyway, If you can get this phone cheap then it's worth a try but I wouldn't recommend paying loads for.