One thing, don't get a QEV.
The reason Smart Parts havent brought out their own is because simply, the thing dont need one.
I've had a QEV in my Ion, and i've now taken it out. they cause more trouble than good.
You have many choices, you can get new bodies, new triggers, new frames, pretty much anything now.
On mine i've changed the feedneck, bottom line, grips and front reg. You can personalise it as much as you want, but i've kept mine fairly simple, but it performs very well.
One thing I think will interest you
The New Ion Blackheart board will be sold at Warped Sports as of the 1st November, with verrrrry limited stock at first.
Features
------------------------
1. Fire Rate (Adjustable)
2. Trigger Debounce (Adjustable)
3. Kick-In Rate for Advanced Modes (Adjustable)
4. Sustain Rate for Advanced Modes (Adjustable)
5. Shots Fired to Enter Advanced Mode (Adjustable)
6. First Shot Drop Software (Adjustable)
7. PSP Legal Mode (Adjustable)
8. NXL Legal Mode (Adjustable)
9. Millennium Legal Mode (Adjustable)
10. Three Shot Burst
11. Low Battery Indicator
12. More User-Friendly Software
Additional ION/SP-8 features:
1. New Speaker for Easier Adjustments and On/Off Activation
2. Non-Battery Draining Design
3. Nickel Plated Solenoid Components
oh yeah, and I almost forgot... 20 BALLS PER SECOND max rate of fire...
Yours for £70 - VERY limited stock arriving 1st November so be quick if you want one of the first ones, more stock will be arriving in 10-14 days.
Think that might keep you happy enough