I got cromo speedplays, then spent an extra whopping £25 for a pair of titanium axles from China. They fit perfectly, it's a very simple swap, and it makes the £299 for the ti speedplays seem like gouging.
I was also buying new shoes, too, so I went the whole hog and bought Northwaves that theoretically had speedplay compatible soles. This involves lifting up the inner sole, removing the 3 hole adapter, and pushing in a Speedplay 4 hole adapter. This was not so simple, and involved about 45 minutes with a sharp knife and a screwdriver per shoe. But the end result is a sub 1mm extra stack, instead of 4 or so, which means a super low stack height. This is good for me as I am not as flexible as I used to be, so the lower my saddle can be, the higher my bars are relatively speaking.
Anyway, I really like the speedplays. They feel very secure, are super easy to clip into compared to Looks (imagine SPD easiness), easy to clip out. But the free float takes a bit of getting used to and you need to carry some covers. Cleat wear doesn't seem so bad if you are wearing covers, and I used to grind through a pair of Look cleats in 4 months or so.