Not an easy choice nowadays as it used to be.
I picked up a 2 coil F2 package in 2010 for $200 and went on to find about 10X's that in about 3 seasons.
Much fun, productive, target separation and speed were excellent...that pretty much free sniper coil in the package still has worth even in today's marketplace.
That small coil ended up finding me way more than the larger coils ever did.
Now you have many more to choose from, the new Fishers and the F22 appears to be an updated version of the F2 with a few nice features added, some still like the Delta, the Aces are kind of outdated but the new Ace series coming out in April seems to have addressed most of the original Ace's shortcomings and finally added VDI numbers among other things, a welcomed and obviously needed change.
Still no report on whether they picked up the speed on that thing and to me speed and target separation is very important.
Not jealous of your tough choice, no matter what drop the 250 right off the list because so many more on the market now with much more and better info on the screen plus added features in the entry level price point.