I would like to take attention to arrival of devices with Type3i receiver. In 3GPP it is defined as "diversity equaliser with interference awareness" (or interference cancelation). Such receivers can achieve significant gain near cell-edge - it means for majority of users. I recently downloaded pdf "Vodafone Springs" (from UK?). There are five modems listed and only one (the basic HSPA 7.2/2/0 do not support Type3i receivers! Those which do support Type3i receivers are:
K4605 42.2mbps (ginggs wrote about this modem - HUAWEI E372)
K4510 28.8mbps (also K4511)
K3806 14.4mbps (not HSPA+ device)
All of these modems have also external antenna connector.
See also this: