Want free business advice? Listen to your customers! – or at least that’s what Richard Branson says.

Wish Nokia had done the same in the release of their most recent E-Series flagship, after all, isn’t the E-Series set of phones supposed to be made for efficiency? They did drop the ‘enterprise’ label for ‘efficiency’ recently but with the E75, they fall squarely on their face.

So, I’m three phones in now… the first E75 was smashed in frustration, the second and third, gifts from contacts that live in the dark underworld of mobile phones. Third time’s a charm, right? Well, I’ve certainly learned to cope, that’s for sure. (more after the jump)

For the many that may be reading this for the first time, I’m not necessarily the average user – I rely heavily on two seperate Microsoft Exchange Servers on different networks to do what I need to do. I prefer push mail and have found that through the years, the Nokia E61, E61i, E51 and E71 have all given me exactly what I need – fast and productive access to two Exchange mailboxes via push.

How, on earth, do I do it? Well, simply put, both Nokia and DataViz have published Exchange connectivity software (Mail for Exchange and RoadSync respectively) for Nokia’s S60v3 phones including the E-Series, N-Series and Communicators. Both programs coexist to a certain extent (I only sync one calendar, tasks, contacts – the other Exchange client is specifically for mail and that’s it) and as a result, I’m a happy camper.

So, back to the E75.

The specs are great – E-Series phone, slider with full keyboard, runs N-Gage, Nokia’s gaming platform, S60v3 feature pack 2 and all the bells and whistles.

I truly think there’s a couple of great features that feature pack 2 phones offer – destinations instead of access points allows you to switch between Wi-Fi and 3G seamlessly for apps that support it (like Nokia Mail and the built in browser), location tagging built into the camera application, user data preservation on firmware updates (not totally stable) and a suite of cool ringtones.

…. but there’s the other side too – the Nokia Mail (which replaces the standard mail app and Mail for Exchange) is slick but it’s slower than molasses running uphill and downright frustrating. The amount of RAM memory to install software is extremely limited and in two cases, I’ve filled the memory of the phone up to the point where mail and SMSes ceased to be received – not cool! The phone isn’t ever eager to respond and the form factor is better fit for a purse than a suit jacket or front pocket on the jeans.

I’ve had much to say about Nokia Mail … simply put, it’s slow, clunky and stinks… more on that, HERE.

In the end, I’ve been far more productive with the E71. It fits better in your pocket, the feature pack 1 software isn’t buggy and there’s plenty of room in the phone’s local memory to install applications.

For that, I give the E75 a 0 out of 10.

Now, since I’ve been stuck with the phone for reviewing purposes, I’ve had to cope – so here’s what I’ve done:

1 – formatted the phone and got rid of N-Gage

2 – installed every possible application to the phone’s external memory – in my case, a reputable 16GB SDHC micro card

3 – installed RoadSync v4 as my primary mail client – even though it has it’s shortcomings, it’s still better than Nokia Mail

4 – used Nokia Mail for my secondary mail client – I don’t have to be as responsive on the phone

5 – upgraded to Ovi Maps and Quickoffice v6

6 – moved the message store of the phone to the external memory

That’s it…  trim the fat and bear with the slowness… and try not to smash yet another phone.

In upcoming Nokia phones, I’ll be sure to be weary of the Nokia Mail application – it’s a piece of garbage. Failing that, I might have to actually carry two phones again, a quick and responsive BlackBerry and maybe something else. As for Nokia, f#%k that!