whats your budget ?
What are you going to be doing with it - general DIY , outside construction , for work ?
What do you mean - with different heads - do you mean bits like PZ , PH , FLAT , TX, various sizes
Do you have a cordless system now at all
Most now are battery , few with a mains lead
ericmark , has explained a few things
you will often see offers on KITS , tools with batteries
These vary and often there are some really good deals around
like for example (dewalt down from £150 to £100 at the moment 19/7/24)
OR Combi & Impact driver (down from £300 to £220, at the moment )
Two top tools for twice the performance – this DeWalt twin pack equips you to take on all kinds of drilling or driving tasks with speed, power and precision.For everyday drilling and screwdriving, the DCD709 combi drill won't let you down. Its two-speed motor delivers 65 Nm of torque and...
www.toolstation.com
Toolstation,
screwfix & FFX often have deals on kits
combi drill , batteries , sometimes includes a Impact Drive ( I use an impact driver all the time for screws , BUT i made sure i got a 3 speed version, so I dont screw through the wood , as mentioned by ericmark)
Various makes around , if you intend to purchase other cordless tools , then making sure you get the right make with a good range of tools using the same batteries, so you dont end up with different battery platforms
Also th esize of battery,on the combi drill and impact driver - I often just use a 2AH for DIY stuff as its small and light ....and will easily last for a lot of DIY jobs before needing recharge . I also have 3Ah and 5Ah batteries , mostly used on other tools, BUT occasional i use on the Drill and Driver
Dewalt (my setup)
Milwaukee
Makita
and then a few of the cheaper range and store range , like lidl & Aldi
all depends on Use and Budget