If you can afford the Twinlinks, they're very good by all accounts...

I use Cactus V4's (1 transmitter, 2 recievers) and have no problems with them... The newer V5's (these are 'transcievers') are apparently even better!

A lot of folk also use RF602's (Yongnuo) and say they're great... There have been issues for pentax shooters regarding the RF603's and debate weather to use Nikon or Canon variants. (Not an issue with the Cactus units, as only one type)

My first set of triggers were Yongnuo YN-04II's... They were ok indoors but not great outside... My girlfriend now uses them on her HS10 (fuji) but they're misfiring a fair bit for her...

When I can afford an upgrade it'll be 2 duo-packs of the V5 at which point the GF can have the V4's

I don't know the Sigma lens... However, will you not lose the 'constant' 2.8 of the Tamron if the Sigma is f2.8-4.5?? I assume the 4.5 is widest aperture at the long end of the zoom range??

That to me would be too much to give up...

My FA50-f1.4 is Vietnam
My FA28-f2.8 is Japan
I don't know where my FA20-f2.8, FA35-f2 or FA100-f2.8-macro are yet (as I haven't bought them)... (yet)

If on a budget... You could try SMC-Pentax-F35-70mm-F3.5-4.5... Can get very cheap and is pretty damn sharp...

I'm not selling my copy!

I'd search flickr for shots taken with the Pentax 18-135WR lens before you write it off... I reckon you'll be pleasantly surprised...

I didn't mean that, no... However... That might be fun... Are decent discounts really availible from big trade shows like this?

I am daft... But they deffo don't make it easy on you!

I have 2 flickr accounts... The first one I had I had to abandon for the same reasons as the OP... My newer one I access via Facebook...

I remember my grandad taking me to a camera fair when I was about 7 years old...It was in the Manchester area and was a huge event (as I remember) he was (my grandad) quite excited about it...

I googled 'Camera Fairs UK' and didn't get to much - a couple of forum conversations about them not being as good as they used to be - Avoid Leeds (which in my case is unfortunate) - Wolverhampton is the biggest in the UK (although its website is truly sh*t...)

Are camera fairs a thing of the past, can deals still be found at them, or are they really (as some say) a bit gloomy and full of grumpy old farts with a wish to rip yo off???

Finally... If there is one in your area... How do you find out when it's on?!?! They appear to be a closely guarded secret

Great work!