I think I'm taking leave of my senses... I use UWA lenses a lot. Back in Canon FF days it was the 17-40L. Nice enough lens and at f11 it was pretty sharp right across the frame (don't ask about the corners at f4!). That was fine though since I mostly used it for landscapes on a tripod and f11 was no issue. When I got into u43 the madness started: 1. I bought a 9-18 and it was OK, but the corners disappointed me. 2. I bought a Panasonic 7-14 and that was much better in the corners so I sold the 9-18 and lived with the 7-14 for a while. But, the lack of an easy ND filter solution and purple blobs eventually forced me to think again. I tried various DIY ND filter holders but none were really satisfactory and I struggled to find the Wratten 1A gel filters in the UK for the rear filter holder mod so I gave up on that. 3. In frustration, I sold the 7-14 and I bought another 9-18. This was better than the first, but at times it didn't go wide enough and the corners, although better, still weren't where I wanted them to be. So, I sold it (dumb move - looking back at images from it, it really wasn't too bad). 4. I bought another 7-14 but this time invested in a decent square filter holder and found the right Wratten 1A gel filter for the rear holder. I've been using this for a while now and it delivers good results. However - the rear gel filters are very fragile and I find myself replacing them fairly regularly. I'm now down to only a few left from the sheet I have and once again it's hard finding them in the UK (and they are very expensive). On top of that the square ND filter is cumbersome too. 5. So, I thought I'd get another 9-18 (I told you I was mad!!). I found a used one at a reasonable price - but guess what.... I don't like the corner performance (duh - I could have told myself that). Why did I do that???? So, I'm at a crossroads... Options seem to be: a) Live with the Pany 7-14 and its annoyances. Perhaps the best option. b) Live with the 9-18's limitations (in truth probably more of an issue in my mind than in reality - would it really be that noticeable on a print?, would it spoil an otherwise excellent shot?). c) Give up with both and get the Oly 7-14. However, it's a huge bit of glass and I'll still be struggling with the after-market ND filter issue (and probably spending a slug of money on another adapter and filter). d) Wait and hope that the new Panasonic 8-18 doesn't suffer the blob issue. e) Look at some of the UWA prime options - Kowa (big £/$/€ and not that good from what I've seen), Loawa (is it here yet?), SLR Magic (no reviews yet). Nothing too clear - but TBH for landscapes a zoom is really the better option. e) Go and buy a cheap Canon 5dii and 17-40! OK - so the post is probably more a case of me ranting and justifying things ... but any sage advice would be welcomed; even if it's only the contact details for a good shrink!